soc/intel/cannonlake: Remove structure variable initialization with 0

Variable without an initializer will default to 0 hence no
need of an explicit initialization.

Change-Id: I208d5e475600b102cd3d972919b170c10c790b32
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/22417
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

src/soc/intel/cannonlake/reset.c

@@ -54,9 +54,6 @@ static int send_heci_reset_message(void)
 	} __packed;
 	struct reset_message msg = {
 		.cmd = MKHI_GLOBAL_RESET,
-		.group_id = 0,
-		.reserved = 0,
-		.result = 0,
 		.req_origin = GR_ORIGIN_BIOS_POST,
 		.reset_type = GLOBAL_RST_TYPE
 	};