Rename config.h to mbedtls_config.h

This commit was generated using the following script:

# ========================
#!/bin/sh
git ls-files | grep -v '^ChangeLog' | xargs sed -b -E -i '
s/((check|crypto|full|mbedtls|query)_config)\.h/\1\nh/g
s/config\.h/mbedtls_config.h/g
y/\n/./
'
mv include/mbedtls/config.h include/mbedtls/mbedtls_config.h
# ========================

Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
diff --git a/include/mbedtls/ecp.h b/include/mbedtls/ecp.h
index 8a1b127..b87114b 100644
--- a/include/mbedtls/ecp.h
+++ b/include/mbedtls/ecp.h
@@ -91,7 +91,7 @@
  * - Increment MBEDTLS_ECP_DP_MAX below if needed.
  * - Update the calculation of MBEDTLS_ECP_MAX_BITS below.
  * - Add the corresponding MBEDTLS_ECP_DP_xxx_ENABLED macro definition to
- *   config.h.
+ *   mbedtls_config.h.
  * - List the curve as a dependency of MBEDTLS_ECP_C and
  *   MBEDTLS_ECDSA_C if supported in check_config.h.
  * - Add the curve to the appropriate curve type macro
@@ -244,7 +244,7 @@
  * \name SECTION: Module settings
  *
  * The configuration options you can set for this module are in this section.
- * Either change them in config.h, or define them using the compiler command line.
+ * Either change them in mbedtls_config.h, or define them using the compiler command line.
  * \{
  */