tests: Add mbedtls_test_ prefix to hexcmp()

Add mbedtls_test_ prefix to hexcmp() test helper
function.

Command to change *.function files:
find . -name "*.function" -exec awk -i inplace \
    '{sub(/hexcmp\>/,"mbedtls_test_&")}1' {} \;

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/tests/suites/test_suite_xtea.function b/tests/suites/test_suite_xtea.function
index a24a420..f1926d6 100644
--- a/tests/suites/test_suite_xtea.function
+++ b/tests/suites/test_suite_xtea.function
@@ -20,7 +20,7 @@
     mbedtls_xtea_setup( &ctx, key_str->x );
     TEST_ASSERT( mbedtls_xtea_crypt_ecb( &ctx, MBEDTLS_XTEA_ENCRYPT, src_str->x, output ) == 0 );
 
-    TEST_ASSERT( hexcmp( output, hex_dst_string->x, 8, hex_dst_string->len ) == 0 );
+    TEST_ASSERT( mbedtls_test_hexcmp( output, hex_dst_string->x, 8, hex_dst_string->len ) == 0 );
 }
 /* END_CASE */
 
@@ -37,7 +37,7 @@
     mbedtls_xtea_setup( &ctx, key_str->x );
     TEST_ASSERT( mbedtls_xtea_crypt_ecb( &ctx, MBEDTLS_XTEA_DECRYPT, src_str->x, output ) == 0 );
 
-    TEST_ASSERT( hexcmp( output, hex_dst_string->x, 8, hex_dst_string->len ) == 0 );
+    TEST_ASSERT( mbedtls_test_hexcmp( output, hex_dst_string->x, 8, hex_dst_string->len ) == 0 );
 }
 /* END_CASE */
 
@@ -55,7 +55,7 @@
     TEST_ASSERT( mbedtls_xtea_crypt_cbc( &ctx, MBEDTLS_XTEA_ENCRYPT, src_str->len, iv_str->x,
                                  src_str->x, output ) == 0 );
 
-    TEST_ASSERT( hexcmp( output, hex_dst_string->x, src_str->len, hex_dst_string->len ) == 0 );
+    TEST_ASSERT( mbedtls_test_hexcmp( output, hex_dst_string->x, src_str->len, hex_dst_string->len ) == 0 );
 }
 /* END_CASE */
 
@@ -73,7 +73,7 @@
     TEST_ASSERT( mbedtls_xtea_crypt_cbc( &ctx, MBEDTLS_XTEA_DECRYPT, src_str->len, iv_str->x,
                                  src_str->x, output ) == 0 );
 
-    TEST_ASSERT( hexcmp( output, hex_dst_string->x, src_str->len, hex_dst_string->len ) == 0 );
+    TEST_ASSERT( mbedtls_test_hexcmp( output, hex_dst_string->x, src_str->len, hex_dst_string->len ) == 0 );
 }
 /* END_CASE */