tests: Add mbedtls_test_ prefix to rnd_* symbols

Add mbedtls_test_ prefix to rnd_buf_info and
rnd_pseudo_info types, to rnd_std_rand(),
rnd_zero_rand(), rnd_buffer_rand() and
rnd_pseudo_rand() functions.

Command to change *.function files:
find . -name "*.function" -exec awk -i inplace \
    '{sub(/rnd_(buf_info|pseudo_info|std_rand| \
    zero_rand|buffer_rand|pseudo_rand)/, \
    "mbedtls_test_&")}1' {} \;

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/tests/suites/test_suite_ssl.function b/tests/suites/test_suite_ssl.function
index 639e8c3..1389e33 100644
--- a/tests/suites/test_suite_ssl.function
+++ b/tests/suites/test_suite_ssl.function
@@ -1174,8 +1174,8 @@
     unsigned char cid0[ SSL_CID_LEN_MIN ];
     unsigned char cid1[ SSL_CID_LEN_MIN ];
 
-    rnd_std_rand( NULL, cid0, sizeof( cid0 ) );
-    rnd_std_rand( NULL, cid1, sizeof( cid1 ) );
+    mbedtls_test_rnd_std_rand( NULL, cid0, sizeof( cid0 ) );
+    mbedtls_test_rnd_std_rand( NULL, cid1, sizeof( cid1 ) );
 #else
     ((void) cid0_len);
     ((void) cid1_len);
@@ -3185,7 +3185,7 @@
 
         /* Encrypt record */
         ret = mbedtls_ssl_encrypt_buf( &ssl, t_enc, &rec,
-                                       rnd_std_rand, NULL );
+                                       mbedtls_test_rnd_std_rand, NULL );
         TEST_ASSERT( ret == 0 || ret == MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL );
         if( ret != 0 )
         {
@@ -3339,7 +3339,7 @@
             rec_backup = rec;
 
             /* Encrypt record */
-            ret = mbedtls_ssl_encrypt_buf( &ssl, t_enc, &rec, rnd_std_rand, NULL );
+            ret = mbedtls_ssl_encrypt_buf( &ssl, t_enc, &rec, mbedtls_test_rnd_std_rand, NULL );
 
             if( ( mode == 1 || mode == 2 ) && seen_success )
             {