ARM: dts: imx6dl-yapp4: Fix lp5562 LED driver probe

BugLink: https://bugs.launchpad.net/bugs/1951643

commit 9b663b3 upstream.

Since the LED multicolor framework support was added in commit
92a8156 ("leds: lp55xx: Add multicolor framework support to lp55xx")
LEDs on this platform stopped working.

Author of the framework attempted to accommodate this DT to the
framework in commit b86d3d2 ("ARM: dts: imx6dl-yapp4: Add reg property
to the lp5562 channel node") but that is not sufficient. A color property
is now required even if the multicolor framework is not used, otherwise
the driver probe fails:

  lp5562: probe of 1-0030 failed with error -22

Add the color property to fix this.

Fixes: 92a8156 ("leds: lp55xx: Add multicolor framework support to lp55xx")
Cc: <stable@vger.kernel.org>
Cc: linux-leds@vger.kernel.org
Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

Author: zandar

arch/arm/boot/dts/imx6dl-yapp4-common.dtsi

@@ -5,6 +5,7 @@
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/interrupt-controller/irq.h>
 #include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
 #include <dt-bindings/pwm/pwm.h>
 
 / {
@@ -275,27 +276,31 @@
 			led-cur = /bits/ 8 <0x20>;
 			max-cur = /bits/ 8 <0x60>;
 			reg = <0>;
+			color = <LED_COLOR_ID_RED>;
 		};
 
 		chan@1 {
 			chan-name = "G";
 			led-cur = /bits/ 8 <0x20>;
 			max-cur = /bits/ 8 <0x60>;
 			reg = <1>;
+			color = <LED_COLOR_ID_GREEN>;
 		};
 
 		chan@2 {
 			chan-name = "B";
 			led-cur = /bits/ 8 <0x20>;
 			max-cur = /bits/ 8 <0x60>;
 			reg = <2>;
+			color = <LED_COLOR_ID_BLUE>;
 		};
 
 		chan@3 {
 			chan-name = "W";
 			led-cur = /bits/ 8 <0x0>;
 			max-cur = /bits/ 8 <0x0>;
 			reg = <3>;
+			color = <LED_COLOR_ID_WHITE>;
 		};
 	};