GET macros use a target variable

The GET macros used to write to a macro parameter, but now
they can be used to assign a value to the desired variable
rather than pass it in as an argument and have it modified
in the macro function.

Due to this MBEDTLS_BYTES_TO_U32_LE is the same as
MBEDTLS_GET_UINT32_LE and was there for replaced in the
appropriate files and removed from common.h

Signed-off-by: Joe Subbiani <joe.subbiani@arm.com>
diff --git a/library/sha1.c b/library/sha1.c
index 6daa2df..0a5edaf 100644
--- a/library/sha1.c
+++ b/library/sha1.c
@@ -110,22 +110,22 @@
     SHA1_VALIDATE_RET( ctx != NULL );
     SHA1_VALIDATE_RET( (const unsigned char *)data != NULL );
 
-    MBEDTLS_GET_UINT32_BE( local.W[ 0], data,  0 );
-    MBEDTLS_GET_UINT32_BE( local.W[ 1], data,  4 );
-    MBEDTLS_GET_UINT32_BE( local.W[ 2], data,  8 );
-    MBEDTLS_GET_UINT32_BE( local.W[ 3], data, 12 );
-    MBEDTLS_GET_UINT32_BE( local.W[ 4], data, 16 );
-    MBEDTLS_GET_UINT32_BE( local.W[ 5], data, 20 );
-    MBEDTLS_GET_UINT32_BE( local.W[ 6], data, 24 );
-    MBEDTLS_GET_UINT32_BE( local.W[ 7], data, 28 );
-    MBEDTLS_GET_UINT32_BE( local.W[ 8], data, 32 );
-    MBEDTLS_GET_UINT32_BE( local.W[ 9], data, 36 );
-    MBEDTLS_GET_UINT32_BE( local.W[10], data, 40 );
-    MBEDTLS_GET_UINT32_BE( local.W[11], data, 44 );
-    MBEDTLS_GET_UINT32_BE( local.W[12], data, 48 );
-    MBEDTLS_GET_UINT32_BE( local.W[13], data, 52 );
-    MBEDTLS_GET_UINT32_BE( local.W[14], data, 56 );
-    MBEDTLS_GET_UINT32_BE( local.W[15], data, 60 );
+    local.W[ 0] = MBEDTLS_GET_UINT32_BE( data,  0 );
+    local.W[ 1] = MBEDTLS_GET_UINT32_BE( data,  4 );
+    local.W[ 2] = MBEDTLS_GET_UINT32_BE( data,  8 );
+    local.W[ 3] = MBEDTLS_GET_UINT32_BE( data, 12 );
+    local.W[ 4] = MBEDTLS_GET_UINT32_BE( data, 16 );
+    local.W[ 5] = MBEDTLS_GET_UINT32_BE( data, 20 );
+    local.W[ 6] = MBEDTLS_GET_UINT32_BE( data, 24 );
+    local.W[ 7] = MBEDTLS_GET_UINT32_BE( data, 28 );
+    local.W[ 8] = MBEDTLS_GET_UINT32_BE( data, 32 );
+    local.W[ 9] = MBEDTLS_GET_UINT32_BE( data, 36 );
+    local.W[10] = MBEDTLS_GET_UINT32_BE( data, 40 );
+    local.W[11] = MBEDTLS_GET_UINT32_BE( data, 44 );
+    local.W[12] = MBEDTLS_GET_UINT32_BE( data, 48 );
+    local.W[13] = MBEDTLS_GET_UINT32_BE( data, 52 );
+    local.W[14] = MBEDTLS_GET_UINT32_BE( data, 56 );
+    local.W[15] = MBEDTLS_GET_UINT32_BE( data, 60 );
 
 #define S(x,n) (((x) << (n)) | (((x) & 0xFFFFFFFF) >> (32 - (n))))