ARM: mstar: Add "pmsleep" node to base dtsi

This patch adds a node for the pmsleep area so that other
drivers can access registers contained within it.
Signed-off-by: Daniel Palmer <daniel@0x0f.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/boot/dts/mstar-v7.dtsi

@@ -73,6 +73,11 @@ riu: bus@1f000000 {
 			#size-cells = <1>;
 			ranges = <0x0 0x1f000000 0x00400000>;
 
+			pmsleep: syscon@1c00 {
+				compatible = "mstar,pmsleep", "syscon";
+				reg = <0x1c00 0x100>;
+			};
+
 			l3bridge: l3bridge@204400 {
 				compatible = "mstar,l3bridge";
 				reg = <0x204400 0x200>;