pinctrl: mediatek: mt7988: rename reg-names to upstream linux format

Rename reg-names to upstream linux format. Upstream linux drop the
"_base". To make use of upstream DTSI, align to the upstream naming.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
diff --git a/arch/arm/dts/mt7988.dtsi b/arch/arm/dts/mt7988.dtsi
index f2bfde5..ee2ad2d 100644
--- a/arch/arm/dts/mt7988.dtsi
+++ b/arch/arm/dts/mt7988.dtsi
@@ -119,8 +119,8 @@
 		      <0 0x11e00000 0 0x1000>,
 		      <0 0x11f00000 0 0x1000>,
 		      <0 0x1000b000 0 0x1000>;
-		reg-names = "gpio_base", "iocfg_tr_base", "iocfg_br_base",
-			    "iocfg_rb_base", "iocfg_lb_base", "iocfg_tl_base",
+		reg-names = "gpio", "iocfg_tr", "iocfg_br",
+			    "iocfg_rb", "iocfg_lb", "iocfg_tl",
 			    "eint";
 		gpio: gpio-controller {
 			gpio-controller;