sunxi: Add usb keyboard Kconfig option

For use together with the hdmi console.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
diff --git a/configs/A13-OLinuXinoM_defconfig b/configs/A13-OLinuXinoM_defconfig
index b1262f7..be8652b 100644
--- a/configs/A13-OLinuXinoM_defconfig
+++ b/configs/A13-OLinuXinoM_defconfig
@@ -3,6 +3,7 @@
 CONFIG_FDTFILE="sun5i-a13-olinuxino-micro.dtb"
 CONFIG_USB1_VBUS_PIN="PG11"
 CONFIG_VIDEO=n
+CONFIG_USB_KEYBOARD=n
 +S:CONFIG_ARM=y
 +S:CONFIG_ARCH_SUNXI=y
 +S:CONFIG_MACH_SUN5I=y