dt-bindings: mmc: sdhci-msm: Add compatible string for sc7180

Add sc7180 SoC specific compatible strings for qcom-sdhci controller.
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/0101016eacb255af-3985262d-9b7e-4813-88c2-61838406e12c-000000@us-west-2.amazonses.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Documentation/devicetree/bindings/mmc/sdhci-msm.txt

@@ -19,6 +19,7 @@ Required properties:
 		"qcom,msm8996-sdhci", "qcom,sdhci-msm-v4"
 		"qcom,sdm845-sdhci", "qcom,sdhci-msm-v5"
 		"qcom,qcs404-sdhci", "qcom,sdhci-msm-v5"
+		"qcom,sc7180-sdhci", "qcom,sdhci-msm-v5";
 	NOTE that some old device tree files may be floating around that only
 	have the string "qcom,sdhci-msm-v4" without the SoC compatible string
 	but doing that should be considered a deprecated practice.