sunxi: Enable LDO3 and LDO4 at 2.8V on OLinuxIno Lime boards

LDO3 and LDO4 are used to power port E resp. port G, which are exposed
on gpio headers, so enable them at 2.8V as specified in the schematic.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
diff --git a/configs/A10-OLinuXino-Lime_defconfig b/configs/A10-OLinuXino-Lime_defconfig
index af96f5b..25b48d9 100644
--- a/configs/A10-OLinuXino-Lime_defconfig
+++ b/configs/A10-OLinuXino-Lime_defconfig
@@ -13,4 +13,6 @@
 # CONFIG_CMD_FLASH is not set
 # CONFIG_CMD_FPGA is not set
 CONFIG_CMD_GPIO=y
+CONFIG_AXP_ALDO3_VOLT=2800
+CONFIG_AXP_ALDO4_VOLT=2800
 CONFIG_USB_EHCI_HCD=y