sunxi: Add support for android boot image

When using the fastboot boot command, the image sent to U-Boot will be an
Android boot image. If the support is missing, that obviously won't work,
so we need it in our configuration.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

include/configs/sunxi-common.h

@@ -352,6 +352,7 @@ extern int soft_i2c_gpio_scl;
 #define CONFIG_CMD_FASTBOOT
 #define CONFIG_FASTBOOT_BUF_ADDR	CONFIG_SYS_LOAD_ADDR
 #define CONFIG_FASTBOOT_BUF_SIZE	0x2000000
+#define CONFIG_ANDROID_BOOT_IMAGE
 
 #define CONFIG_FASTBOOT_FLASH
 #define CONFIG_FASTBOOT_FLASH_MMC_DEV	0