dt-bindings: arm-smmu: Add generic qcom,smmu-500 bindings

Add generic bindings for the Qualcomm variant of the ARM MMU-500. It is
expected that all future platforms will use the generic qcom,smmu-500
compat string in addition to SoC-specific and the generic arm,mmu-500
ones. Older bindings are now described as deprecated.

Note: I have split the sdx55 and sdx65 from the legacy bindings. They
are not supported by the qcom SMMU implementation. I can suppose that
they are using the generic implementation rather than the
Qualcomm-speicific one.
[Add dt-bindings for qcom,smmu-500 for Qcom SoCs].

Change-Id: Id2520441f556590403ac712f68aa7487ca4f205e
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20221114170635.1406534-5-dmitry.baryshkov@linaro.org
Signed-off-by: Will Deacon <will@kernel.org>
Git-Commit: 6c84bbd103d85696af9cc0f746c01f9b2847637e
Git-Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Signed-off-by: Khaja Hussain Shaik Khaji <quic_kshaikkh@quicinc.com>

bindings/iommu/arm,smmu.yaml

@@ -30,7 +30,7 @@ properties:
               - qcom,msm8998-smmu-v2
           - const: qcom,smmu-v2
 
-      - description: Qcom SoCs implementing "arm,mmu-500"
+      - description: Qcom SoCs implementing "qcom,smmu-500" and "arm,mmu-500"
         items:
           - enum:
               - qcom,qcm2290-smmu-500
@@ -48,6 +48,7 @@ properties:
               - qcom,sm8250-smmu-500
               - qcom,sm8350-smmu-500
               - qcom,sm8450-smmu-500
+          - const: qcom,smmu-500
           - const: arm,mmu-500
       - description: |
           Qcom SoCs implementing "qcom,qsmmu-v500", which is a arm,mmu-500