Replace all inclusions of config.h

Also remove preprocessor logic for MBEDTLS_CONFIG_FILE, since
build_info.h alreadyy handles it.

This commit was generated using the following script:

# ========================
#!/bin/sh
git ls-files | grep -v '^include/mbedtls/build_info\.h$' | xargs sed -b -E -i '
/^#if !?defined\(MBEDTLS_CONFIG_FILE\)/i#include "mbedtls/build_info.h"
//,/^#endif/d
'
# ========================

Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
diff --git a/programs/fuzz/onefile.c b/programs/fuzz/onefile.c
index c845149..7b9a590 100644
--- a/programs/fuzz/onefile.c
+++ b/programs/fuzz/onefile.c
@@ -5,11 +5,7 @@
 /* This file doesn't use any Mbed TLS function, but grab config.h anyway
  * in case it contains platform-specific #defines related to malloc or
  * stdio functions. */
-#if !defined(MBEDTLS_CONFIG_FILE)
-#include "mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
+#include "mbedtls/build_info.h"
 
 int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);