arm64: dts: qcom: msm8998: add MSM8998 SDCC specific compatible

Add a MSM8998-specific SDCC compatible, because using only a generic
qcom,sdhci-msm-v4 fallback is deprecated.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220714091042.22287-3-krzysztof.kozlowski@linaro.org

arch/arm64/boot/dts/qcom/msm8998.dtsi

@@ -2076,7 +2076,7 @@ qusb2phy: phy@c012000 {
 		};
 
 		sdhc2: mmc@c0a4900 {
-			compatible = "qcom,sdhci-msm-v4";
+			compatible = "qcom,msm8998-sdhci", "qcom,sdhci-msm-v4";
 			reg = <0x0c0a4900 0x314>, <0x0c0a4000 0x800>;
 			reg-names = "hc_mem", "core_mem";