watchdog: Add reset support for OcteonTX / TX2

Adds support for Core 0 watchdog poke on OcteonTX and OcteonTX2
platforms.

Signed-off-by: Suneel Garapati <sgarapati@marvell.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 0ebf116..210d9f8 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -139,6 +139,16 @@
 	  The watchdog timer is stopped when initialized.
 	  It performs full SoC reset.
 
+config WDT_OCTEONTX
+	bool "OcteonTX core watchdog support"
+	depends on WDT && (ARCH_OCTEONTX || ARCH_OCTEONTX2)
+	default y
+	imply WATCHDOG
+	help
+	  This enables OcteonTX watchdog driver, which can be
+	  found on OcteonTX/TX2 chipsets and inline with driver model.
+	  Only supports watchdog reset.
+
 config WDT_OMAP3
 	bool "TI OMAP watchdog timer support"
 	depends on WDT && ARCH_OMAP2PLUS