pinctrl: meson: add axg support

This adds support for the Amlogic AXG SoC pinctrl and GPIO controller
using a specific set of pinctrl functions which differs from the GX SoCs.

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
diff --git a/drivers/pinctrl/meson/Kconfig b/drivers/pinctrl/meson/Kconfig
index fc51b43..ee820a5 100644
--- a/drivers/pinctrl/meson/Kconfig
+++ b/drivers/pinctrl/meson/Kconfig
@@ -8,6 +8,10 @@
 	select PINCTRL_MESON
 	bool
 
+config PINCTRL_MESON_AXG_PMX
+	select PINCTRL_MESON
+	bool
+
 config PINCTRL_MESON_GXBB
 	bool "Amlogic Meson GXBB SoC pinctrl driver"
 	select PINCTRL_MESON_GX_PMX
@@ -16,4 +20,8 @@
 	bool "Amlogic Meson GXL SoC pinctrl driver"
 	select PINCTRL_MESON_GX_PMX
 
+config PINCTRL_MESON_AXG
+	bool "Amlogic Meson AXG SoC pinctrl driver"
+	select PINCTRL_MESON_AXG_PMX
+
 endif