ARM: dts: am335x: bonegreen-common: Replaced register offsets with defines

The defines are taken from dt-bindings/pinctrl/am33xx.h
Signed-off-by: Christina Quast <cquast@hanoverdisplays.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am335x-bonegreen-common.dtsi

@@ -27,8 +27,8 @@ &mmc2 {
 &am33xx_pinmux {
 	uart2_pins: uart2_pins {
 		pinctrl-single,pins = <
-			AM33XX_IOPAD(0x950, PIN_INPUT | MUX_MODE1)	/* spi0_sclk.uart2_rxd */
-			AM33XX_IOPAD(0x954, PIN_OUTPUT | MUX_MODE1)	/* spi0_d0.uart2_txd */
+			AM33XX_PADCONF(AM335X_PIN_SPI0_SCLK, PIN_INPUT, MUX_MODE1)	/* spi0_sclk.uart2_rxd */
+			AM33XX_PADCONF(AM335X_PIN_SPI0_D0, PIN_OUTPUT, MUX_MODE1)	/* spi0_d0.uart2_txd */
 		>;
 	};
 };