mb/google/bluey: Support hardware watchdog logging

This patch adds support for hardware watchdog event logging which is
useful while debugging crashes or abnormal shutdown.

TEST=Able to build and boot google/bluey.

Change-Id: Iaa60e4eb564a1f517b979c2007707746f3453092
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88775
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/bluey/romstage.c

@@ -6,9 +6,13 @@
 #include <soc/aop_common.h>
 #include <soc/qclib_common.h>
 #include <soc/shrm.h>
+#include <soc/watchdog.h>
 
 void platform_romstage_main(void)
 {
+	/* Watchdog must be checked first to avoid erasing watchdog info later. */
+	check_wdog();
+
 	shrm_fw_load_reset();
 
 	/* QCLib: DDR init & train */