Add missing common.h include.

Remove obsolete config.h include when common.h is included.

Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
diff --git a/library/psa_crypto_storage.c b/library/psa_crypto_storage.c
index 0ef041d..575e992 100644
--- a/library/psa_crypto_storage.c
+++ b/library/psa_crypto_storage.c
@@ -20,12 +20,6 @@
 
 #include "common.h"
 
-#if defined(MBEDTLS_CONFIG_FILE)
-#include MBEDTLS_CONFIG_FILE
-#else
-#include "mbedtls/config.h"
-#endif
-
 #if defined(MBEDTLS_PSA_CRYPTO_STORAGE_C)
 
 #include <stdlib.h>
diff --git a/library/psa_its_file.c b/library/psa_its_file.c
index 7798da6..492be1c 100644
--- a/library/psa_its_file.c
+++ b/library/psa_its_file.c
@@ -18,11 +18,7 @@
  *  limitations under the License.
  */
 
-#if defined(MBEDTLS_CONFIG_FILE)
-#include MBEDTLS_CONFIG_FILE
-#else
-#include "mbedtls/config.h"
-#endif
+#include "common.h"
 
 #if defined(MBEDTLS_PSA_ITS_FILE_C)