feat(intel): support ECDSA HASH Verification

Supporting the command to send digital signature verification
request on a data blob. This include ECC algorithm such as
NISP P-256, NISP P-384, Brainpool 256 and, Branpool 384

Signed-off-by: Boon Khai Ng <boon.khai.ng@intel.com>
Signed-off-by: Sieu Mun Tang <sieu.mun.tang@intel.com>
Change-Id: Ic86f531bfe7cc7606699f2b064ac677aaf806a76
diff --git a/plat/intel/soc/common/include/socfpga_mailbox.h b/plat/intel/soc/common/include/socfpga_mailbox.h
index b5d8e4b..90b1fa6 100644
--- a/plat/intel/soc/common/include/socfpga_mailbox.h
+++ b/plat/intel/soc/common/include/socfpga_mailbox.h
@@ -80,6 +80,7 @@
 #define MBOX_FCS_MAC_VERIFY_REQ				0x83
 #define MBOX_FCS_ECDSA_HASH_SIGN_REQ			0x84
 #define MBOX_FCS_ECDSA_SHA2_DATA_SIGN_REQ		0x85
+#define MBOX_FCS_ECDSA_HASH_SIG_VERIFY			0x86
 #define MBOX_FCS_ECDSA_SHA2_DATA_SIGN_VERIFY		0x87
 #define MBOX_FCS_ECDSA_GET_PUBKEY			0x88
 #define MBOX_FCS_ECDH_REQUEST				0x89