pinctrl: bcm6838: add pinctrl support

Add pinctrl support for broadcom bcm6838 SoC.

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
diff --git a/drivers/pinctrl/broadcom/Kconfig b/drivers/pinctrl/broadcom/Kconfig
index 4056782..b01b725 100644
--- a/drivers/pinctrl/broadcom/Kconfig
+++ b/drivers/pinctrl/broadcom/Kconfig
@@ -5,3 +5,11 @@
 	help
 	   Support pin multiplexing and pin configuration control on
 	   Broadcom's 283x family of SoCs.
+
+config PINCTRL_BCM6838
+	depends on ARCH_BMIPS && PINCTRL_FULL && OF_CONTROL
+	default y
+	bool "Broadcom 6838 family pin control driver"
+	help
+	   Support pin multiplexing and pin configuration control on
+	   Broadcom's 6838 family of SoCs.