dt-bindings: i2c: qcom-cci: add QCOM MSM8974 compatible

Add the compatible for the CCI found in MSM8974 which supports two I2C
masters.
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Documentation/devicetree/bindings/i2c/i2c-qcom-cci.txt

@@ -7,6 +7,7 @@ PROPERTIES:
 	Value type: <string>
 	Definition: must be one of:
 		"qcom,msm8916-cci"
+		"qcom,msm8974-cci"
 		"qcom,msm8996-cci"
 		"qcom,sdm845-cci"
 		"qcom,sm8250-cci"
@@ -43,9 +44,9 @@ PROPERTIES:
 
 SUBNODES:
 
-The CCI provides I2C masters for one (msm8916) or two i2c busses (msm8996,
-sdm845, sm8250 and sm8450), described as subdevices named "i2c-bus@0" and
-"i2c-bus@1".
+The CCI provides I2C masters for one (msm8916) or two i2c busses (msm8974,
+msm8996, sdm845, sm8250 and sm8450), described as subdevices named "i2c-bus@0"
+and "i2c-bus@1".
 
 PROPERTIES: