pinctrl: nuvoton: Add NPCM7xx pinctrl driver

Add Nuvoton BMC NPCM750 Pinmux and Pinconf support.

Signed-off-by: Jim Liu <JJLIU0@nuvoton.com>
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index 563d96d..d9b8287 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -353,6 +353,7 @@
 source "drivers/pinctrl/mtmips/Kconfig"
 source "drivers/pinctrl/mvebu/Kconfig"
 source "drivers/pinctrl/nexell/Kconfig"
+source "drivers/pinctrl/nuvoton/Kconfig"
 source "drivers/pinctrl/nxp/Kconfig"
 source "drivers/pinctrl/renesas/Kconfig"
 source "drivers/pinctrl/rockchip/Kconfig"