dt-bindings: leds: Add bindings for leds-qti-tri-led driver

Add devicetree bindings for the leds-qti-tri-led driver.

Change-Id: I31e2711220857c9d959b082057309390d4d2c3c0
Signed-off-by: Varshitha H N <quic_vhn@quicinc.com>

bindings/leds/qcom,leds-qti-tri-led.yaml

@@ -27,7 +27,13 @@ properties:
   nvmem:
     description: Phandle of the nvmem device name to access SDAM to do PBS
                  trigger. This is required only for HR_LEDs.
+patternProperties:
+  "^led@[0-9a-z]+$":
+    type: object
+    $ref: common.yaml#
+    unevaluatedProperties: false
 
+    properties:
       pwms:
         description: The PWM device (phandle) used for controlling LED.
 
@@ -41,11 +47,13 @@ properties:
       linux,default-trigger:
         description: see Documentation/devicetree/bindings/leds/common.txt;
 
+    required:
+      - pwms
+      - led-sources
+
 required:
   - compatible
   - reg
-  - pwms
-  - led-sources
 
 allOf:
   - $ref: common.yaml#
@@ -54,21 +62,23 @@ additionalProperties: false
 
 examples:
   - |
-    pmi8998_rgb: tri-led@d000{
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    pmi8998_rgb: tri-led@d000 {
             compatible = "qcom,tri-led";
             reg = <0xd000>;
 
-            red {
+            led@1 {
                  label = "red";
                  pwms = <&pmi8998_lpg 4 1000000>;
                  led-sources = <0>;
             };
-            green {
+            led@2 {
                    label = "green";
                    pwms = <&pmi8998_lpg 3 1000000>;
                    led-sources = <1>;
             };
-            blue {
+            led@3 {
                   label = "blue";
                   pwms = <&pmi8998_lpg 2 1000000>;
                   led-sources = <2>;