Add HW_FAILED error codes for message digest modules
New error codes to report failures from alternative implementations of
MD2, MD4, MD5, RIPEMD160, SHA-1, SHA-256, SHA-512.
diff --git a/include/mbedtls/sha512.h b/include/mbedtls/sha512.h
index 7e2fcc5..395f8bb 100644
--- a/include/mbedtls/sha512.h
+++ b/include/mbedtls/sha512.h
@@ -32,6 +32,8 @@
#include <stddef.h>
#include <stdint.h>
+#define MBEDTLS_ERR_SHA512_HW_ACCEL_FAILED -0x0039 /**< SHA-512 hardware accelerator failed */
+
#if ( defined(__ARMCC_VERSION) || defined(_MSC_VER) ) && \
!defined(inline) && !defined(__cplusplus)
#define inline __inline