ARM: dts: am33xx-l4: change #pinctrl-cells from 1 to 2

Increase #pinctrl-cells to 2 so that mux and conf be kept separate. This
requires the AM33XX_PADCONF macro in omap.h to also be modified to keep pin
conf and pin mux values separate.
Signed-off-by: Drew Fustini <drew@beagleboard.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Link: https://lore.kernel.org/r/20200701013320.130441-3-drew@beagleboard.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

arch/arm/boot/dts/am33xx-l4.dtsi

@@ -278,7 +278,7 @@ scm: scm@0 {
 				am33xx_pinmux: pinmux@800 {
 					compatible = "pinctrl-single";
 					reg = <0x800 0x238>;
-					#pinctrl-cells = <1>;
+					#pinctrl-cells = <2>;
 					pinctrl-single,register-width = <32>;
 					pinctrl-single,function-mask = <0x7f>;
 				};

include/dt-bindings/pinctrl/omap.h

@@ -65,7 +65,7 @@
 #define DM814X_IOPAD(pa, val)		OMAP_IOPAD_OFFSET((pa), 0x0800) (val)
 #define DM816X_IOPAD(pa, val)		OMAP_IOPAD_OFFSET((pa), 0x0800) (val)
 #define AM33XX_IOPAD(pa, val)		OMAP_IOPAD_OFFSET((pa), 0x0800) (val)
-#define AM33XX_PADCONF(pa, dir, mux)	OMAP_IOPAD_OFFSET((pa), 0x0800) ((dir) | (mux))
+#define AM33XX_PADCONF(pa, conf, mux)	OMAP_IOPAD_OFFSET((pa), 0x0800) (conf) (mux)
 
 /*
  * Macros to allow using the offset from the padconf physical address