fix(intel): update FCS AES method for GCM block modes

On the Agilex5 platform, AES enc/dec with GCM and GCM-GHASH
modes, the source and destination size should be in multiples
of 16 bytes. For other platforms and other modes, it should
be in multiples of 32 bytes.

Change-Id: I0fa9adafb5d7fc4c794a4acb9339cf8259df0c78
Signed-off-by: Girisha Dengi <girisha.dengi@intel.com>
Signed-off-by: Jit Loon Lim <jit.loon.lim@altera.com>
diff --git a/plat/intel/soc/common/include/socfpga_mailbox.h b/plat/intel/soc/common/include/socfpga_mailbox.h
index f965b7d..29b76ab 100644
--- a/plat/intel/soc/common/include/socfpga_mailbox.h
+++ b/plat/intel/soc/common/include/socfpga_mailbox.h
@@ -309,7 +309,7 @@
 				((client_id << MBOX_CLIENT_ID_SHIFT) |	 \
 				(job_id << MBOX_JOB_ID_SHIFT) |		 \
 				(args_len << MBOX_CMD_LEN_SHIFT) |	 \
-				(indirect << MBOX_CMD_LEN_SHIFT) |	 \
+				(indirect << MBOX_INDIRECT_SHIFT) |	 \
 				cmd)
 
 #define FLAG_SDM_RESPONSE_IS_VALID			BIT(0)