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/programs/test/query_config.h b/programs/test/query_config.h
index 79c23cf..0fad886 100644
--- a/programs/test/query_config.h
+++ b/programs/test/query_config.h
@@ -1,5 +1,5 @@
 /*
- *  Query Mbed TLS compile time configurations from config.h
+ *  Query Mbed TLS compile time configurations from mbedtls_config.h
  *
  *  Copyright The Mbed TLS Contributors
  *  SPDX-License-Identifier: Apache-2.0
@@ -26,7 +26,7 @@
  *
  * \param config    The symbol to query (e.g. "MBEDTLS_RSA_C").
  * \return          \c 0 if the symbol was defined at compile time
- *                  (in MBEDTLS_CONFIG_FILE or config.h),
+ *                  (in MBEDTLS_CONFIG_FILE or mbedtls_config.h),
  *                  \c 1 otherwise.
  *
  * \note            This function is defined in `programs/test/query_config.c`