ENGR00139234-2 MX6: add watchdog device

Add watchdog device

Signed-off-by: Frank Li <Frank.Li@freescale.com>
diff --git a/arch/arm/mach-mx6/Kconfig b/arch/arm/mach-mx6/Kconfig
index 2ff2d19..77eae0a 100644
--- a/arch/arm/mach-mx6/Kconfig
+++ b/arch/arm/mach-mx6/Kconfig
@@ -37,6 +37,7 @@
 	select IMX_HAVE_PLATFORM_FSL_USB_WAKEUP
 	select IMX_HAVE_PLATFORM_AHCI
 	select IMX_HAVE_PLATFORM_IMX_OCOTP
+	select IMX_HAVE_PLATFORM_IMX2_WDT
 	help
 	  Include support for i.MX 6Quad SABRE Automotive Infotainment platform. This includes specific
 	  configurations for the board and its peripherals.