dt-bindings: iio: qcom,spmi-vadc: Add compatible string for ADC lite driver

Add the compatible string for ADC-lite driver for
reading parallel charger current channel.

Change-Id: Ie0d3f90d06be4bf28661736058c5d1fb2af1ac8f
Signed-off-by: Jishnu Prakash <quic_jprakash@quicinc.com>
[quic_amelende@quicinc.com: converted binding change from .txt to .yaml]
Signed-off-by: Anjelique Melendez <quic_amelende@quicinc.com>

bindings/iio/adc/qcom,spmi-vadc.yaml

@@ -25,6 +25,7 @@ properties:
       - enum:
           - qcom,spmi-vadc
           - qcom,spmi-adc5
+          - qcom,spmi-adc5-lite
           - qcom,spmi-adc-rev2
           - qcom,spmi-adc7
 
@@ -114,10 +115,9 @@ patternProperties:
               channel calibration. If property is not found, channel will be
               calibrated with 0.625V and 1.25V reference channels, also
               known as absolute calibration.
-            - For compatible property "qcom,spmi-adc5", "qcom,spmi-adc7" and
+            - For all other compatible properties, if this property is specified
-              "qcom,spmi-adc-rev2", if this property is specified VADC will use
+              VADC will use the VDD reference (1.875V) and GND for channel calibration.
-              the VDD reference (1.875V) and GND for channel calibration. If
+              If property is not found, channel will be calibrated with 0V and 1.25V
-              property is not found, channel will be calibrated with 0V and 1.25V
               reference channels, also known as absolute calibration.
         type: boolean
 
@@ -209,6 +209,29 @@ allOf:
               enum: [ 1, 2, 4, 8, 16 ]
               default: 1
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: qcom,spmi-adc5-lite
+
+    then:
+      patternProperties:
+        "^channel@[0-9a-f]+$":
+          properties:
+            qcom,decimation:
+              enum: [ 250, 420, 840 ]
+              default: 840
+
+            qcom,hw-settle-time:
+              enum: [ 15, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1, 2,
+                      4, 6, 8, 10]
+              default: 15
+
+            qcom,avg-samples:
+              enum: [ 1, 2, 4, 8, 16 ]
+              default: 1
+
   - if:
       properties:
         compatible: