ARM: dts: am43xx-epos-evm: Add sleep pinmux for ecap0

Add sleep pinmux for ecap0.
Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am43x-epos-evm.dts

@@ -219,12 +219,18 @@ AM4372_IOPAD(0x89c, PIN_OUTPUT | MUX_MODE0)		/* gpmc_be0n_cle.gpmc_be0n_cle */
 			>;
 		};
 
-		ecap0_pins: backlight_pins {
+		ecap0_pins_default: backlight_pins_default {
 			pinctrl-single,pins = <
 				AM4372_IOPAD(0x964, MUX_MODE0)         /* eCAP0_in_PWM0_out.eCAP0_in_PWM0_out MODE0 */
 			>;
 		};
 
+		ecap0_pins_sleep: backlight_pins_sleep {
+			pinctrl-single,pins = <
+				AM4372_IOPAD(0x964, DS0_PIN_OUTPUT_PULLUP | MUX_MODE7)
+			>;
+		};
+
 		i2c2_pins: pinmux_i2c2_pins {
 			pinctrl-single,pins = <
 				AM4372_IOPAD(0x9c0, PIN_INPUT_PULLUP | SLEWCTRL_FAST | MUX_MODE8)    /* i2c2_sda.i2c2_sda */
@@ -680,8 +686,9 @@ adc {
 
 &ecap0 {
 		status = "okay";
-		pinctrl-names = "default";
-		pinctrl-0 = <&ecap0_pins>;
+		pinctrl-names = "default", "sleep";
+		pinctrl-0 = <&ecap0_pins_default>;
+		pinctrl-1 = <&ecap0_pins_sleep>;
 };
 
 &spi0 {