pinctrl: sunxi: Add sunxi GMAC pinmuxes

Pin lists and mux values were taken from the Linux drivers.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.c b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
index ce71199..0162749 100644
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -287,6 +287,7 @@
 };
 
 static const struct sunxi_pinctrl_function sun6i_a31_pinctrl_functions[] = {
+	{ "gmac",	2 },	/* PA0-PA27 */
 	{ "gpio_in",	0 },
 	{ "gpio_out",	1 },
 #if IS_ENABLED(CONFIG_UART0_PORT_F)
@@ -318,6 +319,7 @@
 
 static const struct sunxi_pinctrl_function sun7i_a20_pinctrl_functions[] = {
 	{ "emac",	2 },	/* PA0-PA17 */
+	{ "gmac",	5 },	/* PA0-PA17 */
 	{ "gpio_in",	0 },
 	{ "gpio_out",	1 },
 #if IS_ENABLED(CONFIG_UART0_PORT_F)
@@ -467,6 +469,7 @@
 };
 
 static const struct sunxi_pinctrl_function sun9i_a80_pinctrl_functions[] = {
+	{ "gmac",	2 },	/* PA0-PA17 */
 	{ "gpio_in",	0 },
 	{ "gpio_out",	1 },
 #if IS_ENABLED(CONFIG_UART0_PORT_F)