target: msm8226: Add support to read restart reason.

Change-Id: I2a53596dd7d19411dd4c3707907b90670b0e2ef9
diff --git a/target/msm8226/init.c b/target/msm8226/init.c
index 6b25929..442a26f 100644
--- a/target/msm8226/init.c
+++ b/target/msm8226/init.c
@@ -173,6 +173,17 @@
 	}
 }
 
+unsigned check_reboot_mode(void)
+{
+	uint32_t restart_reason = 0;
+
+	/* Read reboot reason and scrub it */
+	restart_reason = readl(RESTART_REASON_ADDR);
+	writel(0x00, RESTART_REASON_ADDR);
+
+	return restart_reason;
+}
+
 unsigned board_machtype(void)
 {
 }