mvebu: pinctrl: Add Armada 38x driver

This new Armada 38x driver is based on Linux kernel driver. It can set any
pin to any valid function specified in DT like Linux kernel, it provides
support for 'pinmux status -a' command and also for pinctrl_gpio_request().

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/drivers/pinctrl/mvebu/Kconfig b/drivers/pinctrl/mvebu/Kconfig
index 07d4f3e..574fb4d 100644
--- a/drivers/pinctrl/mvebu/Kconfig
+++ b/drivers/pinctrl/mvebu/Kconfig
@@ -1,5 +1,12 @@
 if ARCH_MVEBU
 
+config PINCTRL_ARMADA_38X
+	depends on ARMADA_38X && PINCTRL_FULL
+	bool "Armada 38x pin control driver"
+	help
+	   Support pin multiplexing and pin configuration control on
+	   Marvell's Armada-38x SoC.
+
 config PINCTRL_ARMADA_37XX
 	depends on ARMADA_3700 && PINCTRL_FULL
 	bool "Armada 37xx pin control driver"