sunxi: Hummingbird_A31_defconfig: Drop MACPWR option

MACPWR was used to bring the Ethernet PHY out of reset. The designware
driver now supports the phy reset gpio binding, so this is no longer
needed. In fact in requesting the same GPIO, it makes the designware
driver fail to probe.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

configs/Hummingbird_A31_defconfig

@@ -9,7 +9,7 @@ CONFIG_VIDEO_VGA_EXTERNAL_DAC_EN="PH25"
 CONFIG_DEFAULT_DEVICE_TREE="sun6i-a31-hummingbird"
 # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
 CONFIG_SPL=y
-CONFIG_SYS_EXTRA_OPTIONS="SUNXI_GMAC,RGMII,MACPWR=SUNXI_GPA(21)"
+CONFIG_SYS_EXTRA_OPTIONS="SUNXI_GMAC,RGMII"
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_FLASH is not set
 # CONFIG_CMD_FPGA is not set