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>

arch/arm/cpu/armv7/sunxi/board.c

@@ -223,6 +223,7 @@ int cpu_eth_init(bd_t *bis)
 	__maybe_unused int rc;
 
 #ifdef CONFIG_MACPWR
+	gpio_request(CONFIG_MACPWR, "macpwr");
 	gpio_direction_output(CONFIG_MACPWR, 1);
 	mdelay(200);
 #endif