clk: qcom: add SM8550 DISPCC driver

Add support for the display clock controller found in SM8550
based devices.

This clock controller feeds the Multimedia Display SubSystem (MDSS).
This driver is based on the SM8450 support.
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230103-topic-sm8550-upstream-dispcc-v3-3-8a03d348c572@linaro.org

drivers/clk/qcom/Kconfig

@@ -702,6 +702,15 @@ config SM_DISPCC_8450
 	  Say Y if you want to support display devices and functionality such as
 	  splash screen.
 
+config SM_DISPCC_8550
+	tristate "SM8550 Display Clock Controller"
+	depends on SM_GCC_8550
+	help
+	  Support for the display clock controller on Qualcomm Technologies, Inc
+	  SM8550 devices.
+	  Say Y if you want to support display devices and functionality such as
+	  splash screen.
+
 config SM_GCC_6115
 	tristate "SM6115 and SM4250 Global Clock Controller"
 	select QCOM_GDSC

drivers/clk/qcom/Makefile

@@ -100,6 +100,7 @@ obj-$(CONFIG_SM_DISPCC_6350) += dispcc-sm6350.o
 obj-$(CONFIG_SM_DISPCC_6375) += dispcc-sm6375.o
 obj-$(CONFIG_SM_DISPCC_8250) += dispcc-sm8250.o
 obj-$(CONFIG_SM_DISPCC_8450) += dispcc-sm8450.o
+obj-$(CONFIG_SM_DISPCC_8550) += dispcc-sm8550.o
 obj-$(CONFIG_SM_GCC_6115) += gcc-sm6115.o
 obj-$(CONFIG_SM_GCC_6125) += gcc-sm6125.o
 obj-$(CONFIG_SM_GCC_6350) += gcc-sm6350.o