soc/intel/cannonlake: Initialize struct member to 0

As per GCC 7.1 compiler struct reset_reply is considered
as uninitialized inside send_heci_reset_message function.

Change-Id: I01b95d31bfb1d2e9af1704a28dacb9cfd1cdcb50
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/20941
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/soc/intel/cannonlake/reset.c

@@ -17,6 +17,7 @@
 #include <intelblocks/cse.h>
 #include <fsp/util.h>
 #include <reset.h>
+#include <string.h>
 #include <timer.h>
 
 /* Reset Request  */
@@ -65,6 +66,7 @@ static int send_heci_reset_message(void)
 		return -1;
 
 	reply_size = sizeof(reply);
+	memset(&reply, 0, reply_size);
 	heci_receive(&reply, &reply_size);
 	/* get reply result from HECI MSG  */
 	if (reply.result != 0) {