sunxi: Request macpwr gpio before using it

This fixes ethernet no longer working on boards which use a gpio to enable
the phy.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
diff --git a/arch/arm/cpu/armv7/sunxi/board.c b/arch/arm/cpu/armv7/sunxi/board.c
index a82c8b9..4b2494e 100644
--- a/arch/arm/cpu/armv7/sunxi/board.c
+++ b/arch/arm/cpu/armv7/sunxi/board.c
@@ -223,6 +223,7 @@
 	__maybe_unused int rc;
 
 #ifdef CONFIG_MACPWR
+	gpio_request(CONFIG_MACPWR, "macpwr");
 	gpio_direction_output(CONFIG_MACPWR, 1);
 	mdelay(200);
 #endif