pinctrl: add i.MXRT driver

Add i.MXRT pinctrl driver.

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
diff --git a/drivers/pinctrl/nxp/Kconfig b/drivers/pinctrl/nxp/Kconfig
index f2e67ca..ec55351 100644
--- a/drivers/pinctrl/nxp/Kconfig
+++ b/drivers/pinctrl/nxp/Kconfig
@@ -99,6 +99,20 @@
 	  familiy, e.g. i.MX28. This feature depends on device tree
 	  configuration.
 
+config PINCTRL_IMXRT
+	bool "IMXRT pinctrl driver"
+	depends on ARCH_IMXRT && PINCTRL_FULL
+	select DEVRES
+	select PINCTRL_IMX
+	help
+	  Say Y here to enable the imxrt pinctrl driver
+
+	  This provides a simple pinctrl driver for i.MXRT 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.
+
 config PINCTRL_VYBRID
 	bool "Vybrid (vf610) pinctrl driver"
 	depends on ARCH_VF610 && PINCTRL_FULL