arm64: dts: sm8650: Add msi-map-mask for PCIe nodes

"msi-map-mask" is a required property for all Qcom PCIe controllers as it
would allow all PCIe devices under a bus to share the same MSI identifier.

Without this property, each device has to use a separate MSI identifier
which is not possible due to platform limitations.

Currently, this is not an issue since only one device is connected to the
bus on boards making use of this SoC.

Fixes: a33a532 ("arm64: dts: qcom: sm8650: Use GIC-ITS for PCIe0 and PCIe1")
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240216-sm8550-msi-map-fix-v1-1-b66d83ce48b7@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

Author: Mani-Sadhasivam

arch/arm64/boot/dts/qcom/sm8650.dtsi

@@ -2277,6 +2277,7 @@
 			/* Entries are reversed due to the unusual ITS DeviceID encoding */
 			msi-map = <0x0 &gic_its 0x1401 0x1>,
 				  <0x100 &gic_its 0x1400 0x1>;
+			msi-map-mask = <0xff00>;
 
 			linux,pci-domain = <0>;
 			num-lanes = <2>;
@@ -2404,6 +2405,7 @@
 			/* Entries are reversed due to the unusual ITS DeviceID encoding */
 			msi-map = <0x0 &gic_its 0x1481 0x1>,
 				  <0x100 &gic_its 0x1480 0x1>;
+			msi-map-mask = <0xff00>;
 
 			linux,pci-domain = <1>;
 			num-lanes = <2>;