dt-bindings: sram: qcom,imem: document SM6375 IMEM

Add a compatible for SM6375 IMEM.
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230303-topic-sm6375_features0_dts-v2-3-708b8191f7eb@linaro.org

Documentation/devicetree/bindings/sram/qcom,imem.yaml

@@ -26,6 +26,7 @@ properties:
           - qcom,sdm845-imem
           - qcom,sdx55-imem
           - qcom,sdx65-imem
+          - qcom,sm6375-imem
           - qcom,sm8450-imem
       - const: syscon
       - const: simple-mfd