pinctrl: Add i.MX7ULP pinctrl driver

Add i.MX7ULP pinctrl driver.
Select CONFIG_PINCTRL_IMX7ULP to use this driver.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by : Stefano Babic <sbabic@denx.de>
diff --git a/drivers/pinctrl/nxp/Kconfig b/drivers/pinctrl/nxp/Kconfig
index 238f77d..b668359 100644
--- a/drivers/pinctrl/nxp/Kconfig
+++ b/drivers/pinctrl/nxp/Kconfig
@@ -42,3 +42,17 @@
 	  configuration. This driver is different from the linux one,
 	  this is a simple implementation, only parses the 'fsl,pins'
 	  property and configure related registers.
+
+config PINCTRL_IMX7ULP
+	bool "IMX7ULP pinctrl driver"
+	depends on ARCH_MX7ULP && PINCTRL_FULL
+	select DEVRES
+	select PINCTRL_IMX
+	help
+	  Say Y here to enable the imx7ulp pinctrl driver
+
+	  This provides a simple pinctrl driver for i.MX7ULP SoC familiy.
+	  This feature depends on device tree configuration. This driver
+	  is different from the linux one, this is a simple implementation,
+	  only parses the 'fsl,pins' property and configure related
+	  registers.