pinctrl: qcom: Add sm8250 pinctrl driver.

Add initial Qualcomm SM8250 pinctrl driver to support pin configuration
with pinctrl framework for SM8250 SoC.

Signed-off-by: Rishabh Bhatnagar <rishabhb@codeaurora.org>
Signed-off-by: Venkata Narendra Kumar Gutta <vnkgutta@codeaurora.org>
Link: https://lore.kernel.org/r/1586477057-7636-2-git-send-email-vnkgutta@codeaurora.org
[bjorn: Regrouped functions, upstream tiles implementation, dropped
        downstream-only features]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20200417061907.1226490-3-bjorn.andersson@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/qcom/Kconfig

@@ -216,4 +216,13 @@ config PINCTRL_SM8150
 	 Qualcomm Technologies Inc TLMM block found on the Qualcomm
 	 Technologies Inc SM8150 platform.
 
+config PINCTRL_SM8250
+	tristate "Qualcomm Technologies Inc SM8250 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 SM8250 platform.
+
 endif

drivers/pinctrl/qcom/Makefile

@@ -26,3 +26,4 @@ obj-$(CONFIG_PINCTRL_SC7180)	+= pinctrl-sc7180.o
 obj-$(CONFIG_PINCTRL_SDM660)   += pinctrl-sdm660.o
 obj-$(CONFIG_PINCTRL_SDM845) += pinctrl-sdm845.o
 obj-$(CONFIG_PINCTRL_SM8150) += pinctrl-sm8150.o
+obj-$(CONFIG_PINCTRL_SM8250) += pinctrl-sm8250.o