ARM: mmp: add more compatible names in gpio driver

Since more driver names are added into platform id, do the same thing on
compatible names for DT mode.

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/arch/arm/boot/dts/pxa910.dtsi b/arch/arm/boot/dts/pxa910.dtsi
index 825aaca..0247c62 100644
--- a/arch/arm/boot/dts/pxa910.dtsi
+++ b/arch/arm/boot/dts/pxa910.dtsi
@@ -89,7 +89,7 @@
 			};
 
 			gpio@d4019000 {
-				compatible = "mrvl,mmp-gpio";
+				compatible = "marvell,mmp-gpio";
 				#address-cells = <1>;
 				#size-cells = <1>;
 				reg = <0xd4019000 0x1000>;