pinctrl: qcom: Add SDX55 pincontrol driver

Add initial Qualcomm SDX55 pinctrl driver to support pin configuration
with pinctrl framework for SDX55 SoC.

[ported from downstream and tidy up]
Signed-off-by: Jeevan Shriram <jshriram@codeaurora.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20201109062620.14566-3-vkoul@kernel.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/qcom/Kconfig

@@ -229,6 +229,15 @@ config PINCTRL_SDM845
 	 Qualcomm Technologies Inc TLMM block found on the Qualcomm
 	 Technologies Inc SDM845 platform.
 
+config PINCTRL_SDX55
+	tristate "Qualcomm Technologies Inc SDX55 pin controller driver"
+	depends on GPIOLIB && OF
+	select PINCTRL_MSM
+	help
+	 This is the pinctrl, pinmux, pinconf and gpiolib driver for the
+	 Qualcomm Technologies Inc TLMM block found on the Qualcomm
+	 Technologies Inc SDX55 platform.
+
 config PINCTRL_SM8150
 	tristate "Qualcomm Technologies Inc SM8150 pin controller driver"
 	depends on GPIOLIB && OF

drivers/pinctrl/qcom/Makefile

@@ -27,5 +27,6 @@ obj-$(CONFIG_PINCTRL_QCOM_SSBI_PMIC) += pinctrl-ssbi-mpp.o
 obj-$(CONFIG_PINCTRL_SC7180)	+= pinctrl-sc7180.o
 obj-$(CONFIG_PINCTRL_SDM660)   += pinctrl-sdm660.o
 obj-$(CONFIG_PINCTRL_SDM845) += pinctrl-sdm845.o
+obj-$(CONFIG_PINCTRL_SDX55) += pinctrl-sdx55.o
 obj-$(CONFIG_PINCTRL_SM8150) += pinctrl-sm8150.o
 obj-$(CONFIG_PINCTRL_SM8250) += pinctrl-sm8250.o