Remove unneeded namesapcing in header files

Remove the `mbedtls` namesapcing in the `#include` in header files
Resolves issue #857
diff --git a/ChangeLog b/ChangeLog
index be0026e..7c0a678 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 mbed TLS ChangeLog (Sorted per branch, date)
 
+= mbed TLS x.x.x branch released xxxx-xx-xx
+
+Bugfix
+   * Fix namespacing in header files. REmove the `mbedtls` namespacing in
+     the `#include` in the header files. Resolves #857
+
 = mbed TLS 2.7.4 branch released 2018-06-18
 
 Bugfix
diff --git a/configs/config-ccm-psk-tls1_2.h b/configs/config-ccm-psk-tls1_2.h
index a783e6b..96515a2 100644
--- a/configs/config-ccm-psk-tls1_2.h
+++ b/configs/config-ccm-psk-tls1_2.h
@@ -83,6 +83,6 @@
  */
 #define MBEDTLS_SSL_MAX_CONTENT_LEN             512
 
-#include "mbedtls/check_config.h"
+#include "check_config.h"
 
 #endif /* MBEDTLS_CONFIG_H */
diff --git a/configs/config-mini-tls1_1.h b/configs/config-mini-tls1_1.h
index 013bc03..a14fc10 100644
--- a/configs/config-mini-tls1_1.h
+++ b/configs/config-mini-tls1_1.h
@@ -73,6 +73,6 @@
 /* For testing with compat.sh */
 #define MBEDTLS_FS_IO
 
-#include "mbedtls/check_config.h"
+#include "check_config.h"
 
 #endif /* MBEDTLS_CONFIG_H */
diff --git a/configs/config-suite-b.h b/configs/config-suite-b.h
index 18e2c40..23b53d6 100644
--- a/configs/config-suite-b.h
+++ b/configs/config-suite-b.h
@@ -112,6 +112,6 @@
  */
 #define MBEDTLS_SSL_MAX_CONTENT_LEN             1024
 
-#include "mbedtls/check_config.h"
+#include "check_config.h"
 
 #endif /* MBEDTLS_CONFIG_H */
diff --git a/configs/config-thread.h b/configs/config-thread.h
index 25db16b..7c43113 100644
--- a/configs/config-thread.h
+++ b/configs/config-thread.h
@@ -89,6 +89,6 @@
 /* Save ROM and a few bytes of RAM by specifying our own ciphersuite list */
 #define MBEDTLS_SSL_CIPHERSUITES MBEDTLS_TLS_ECJPAKE_WITH_AES_128_CCM_8
 
-#include "mbedtls/check_config.h"
+#include "check_config.h"
 
 #endif /* MBEDTLS_CONFIG_H */
diff --git a/include/mbedtls/cmac.h b/include/mbedtls/cmac.h
index 628c9da..24839a2 100644
--- a/include/mbedtls/cmac.h
+++ b/include/mbedtls/cmac.h
@@ -26,7 +26,7 @@
 #ifndef MBEDTLS_CMAC_H
 #define MBEDTLS_CMAC_H
 
-#include "mbedtls/cipher.h"
+#include "cipher.h"
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index c7ba174..8aee63f 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -2818,7 +2818,7 @@
 /* \} name SECTION: Customisation configuration options */
 
 /* Target and application specific configurations */
-//#define YOTTA_CFG_MBEDTLS_TARGET_CONFIG_FILE "mbedtls/target_config.h"
+//#define YOTTA_CFG_MBEDTLS_TARGET_CONFIG_FILE "target_config.h"
 
 #if defined(TARGET_LIKE_MBED) && defined(YOTTA_CFG_MBEDTLS_TARGET_CONFIG_FILE)
 #include YOTTA_CFG_MBEDTLS_TARGET_CONFIG_FILE
diff --git a/include/mbedtls/ctr_drbg.h b/include/mbedtls/ctr_drbg.h
index 121575a..e554a0a 100644
--- a/include/mbedtls/ctr_drbg.h
+++ b/include/mbedtls/ctr_drbg.h
@@ -31,7 +31,7 @@
 #include "aes.h"
 
 #if defined(MBEDTLS_THREADING_C)
-#include "mbedtls/threading.h"
+#include "threading.h"
 #endif
 
 #define MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED        -0x0034  /**< The entropy source failed. */
diff --git a/include/mbedtls/hmac_drbg.h b/include/mbedtls/hmac_drbg.h
index e0821cf..2608de8 100644
--- a/include/mbedtls/hmac_drbg.h
+++ b/include/mbedtls/hmac_drbg.h
@@ -27,7 +27,7 @@
 #include "md.h"
 
 #if defined(MBEDTLS_THREADING_C)
-#include "mbedtls/threading.h"
+#include "threading.h"
 #endif
 
 /*
diff --git a/include/mbedtls/net.h b/include/mbedtls/net.h
index 28ae821..6c13b53 100644
--- a/include/mbedtls/net.h
+++ b/include/mbedtls/net.h
@@ -1,7 +1,7 @@
 /**
  * \file net.h
  *
- * \brief Deprecated header file that includes mbedtls/net_sockets.h
+ * \brief Deprecated header file that includes net_sockets.h
  *
  * \deprecated Superseded by mbedtls/net_sockets.h
  */
@@ -25,7 +25,7 @@
  */
 
 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
-#include "mbedtls/net_sockets.h"
+#include "net_sockets.h"
 #if defined(MBEDTLS_DEPRECATED_WARNING)
 #warning "Deprecated header file: Superseded by mbedtls/net_sockets.h"
 #endif /* MBEDTLS_DEPRECATED_WARNING */
diff --git a/include/mbedtls/platform.h b/include/mbedtls/platform.h
index 2e21f03..7c2835b 100644
--- a/include/mbedtls/platform.h
+++ b/include/mbedtls/platform.h
@@ -31,7 +31,7 @@
 #endif
 
 #if defined(MBEDTLS_HAVE_TIME)
-#include "mbedtls/platform_time.h"
+#include "platform_time.h"
 #endif
 
 #ifdef __cplusplus
diff --git a/include/mbedtls/ssl.h b/include/mbedtls/ssl.h
index 42e0dcb..f424331 100644
--- a/include/mbedtls/ssl.h
+++ b/include/mbedtls/ssl.h
@@ -53,7 +53,7 @@
 #endif
 
 #if defined(MBEDTLS_HAVE_TIME)
-#include "mbedtls/platform_time.h"
+#include "platform_time.h"
 #endif
 
 /*