clk: rockchip: add id for watchdog pclk on rk3288

Adds a new id for the pclk supplying the watchdog on rk3288 socs.
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Reviewed-by: NDoug Anderson <dianders@chromium.org>

include/dt-bindings/clock/rk3288-cru.h

@@ -157,6 +157,7 @@
 #define PCLK_PUBL0		365
 #define PCLK_DDRUPCTL1		366
 #define PCLK_PUBL1		367
+#define PCLK_WDT		368
 
 /* hclk gates */
 #define HCLK_GPS		448