Add missing 'common.h' include.

Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
diff --git a/library/psa_crypto_storage.c b/library/psa_crypto_storage.c
index 773d3aa..0ef041d 100644
--- a/library/psa_crypto_storage.c
+++ b/library/psa_crypto_storage.c
@@ -18,6 +18,8 @@
  *  limitations under the License.
  */
 
+#include "common.h"
+
 #if defined(MBEDTLS_CONFIG_FILE)
 #include MBEDTLS_CONFIG_FILE
 #else