watchdog: Introduce watchdog driver for Intel Tangier

Add watchdog driver for Intel Tangier based platforms.

Signed-off-by: Vincent Tinelli <vincent.tinelli@intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index d360a17..fc46b67 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -19,7 +19,16 @@
 	default y if AM33XX
 	help
 	  Say Y here to enable the OMAP3+ watchdog driver.
-	
+
+config TANGIER_WATCHDOG
+	bool "Intel Tangier watchdog"
+	depends on INTEL_MID
+	select HW_WATCHDOG
+	help
+	  This enables support for watchdog controller available on
+	  Intel Tangier SoC. If you're using a board with Intel Tangier
+	  SoC, say Y here.
+
 config ULP_WATCHDOG
 	bool "i.MX7ULP watchdog"
 	help