lib: Add WATCHDOG_RESET to wait_bit.h

wait_for_bit() is missing reset watchdog in case watchdog
is configured.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/include/wait_bit.h b/include/wait_bit.h
index 066e30c..06ad43a 100644
--- a/include/wait_bit.h
+++ b/include/wait_bit.h
@@ -11,6 +11,7 @@
 
 #include <common.h>
 #include <console.h>
+#include <watchdog.h>
 #include <linux/errno.h>
 #include <asm/io.h>
 
@@ -59,6 +60,7 @@
 		}
 
 		udelay(1);
+		WATCHDOG_RESET();
 	}
 
 	debug("%s: Timeout (reg=%p mask=%08x wait_set=%i)\n", prefix, reg, mask,