From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Thu, 16 Jul 2015 22:13:59 +0200
Subject: sunxi: respect CONFIG_TARGET_IMAGES_GZIP

The ext4 images are huge uncompressed.

diff --git a/target/linux/sunxi/image/Makefile b/target/linux/sunxi/image/Makefile
index 19ab935..d3f4409 100644
--- a/target/linux/sunxi/image/Makefile
+++ b/target/linux/sunxi/image/Makefile
@@ -43,6 +43,10 @@ define Image/Build/SDCard
 		$(CONFIG_SUNXI_SD_BOOT_PARTSIZE) \
 		$(CONFIG_TARGET_ROOTFS_PARTSIZE) \
 		$(KDIR)/uboot-sunxi-$(PROFILE)-u-boot-with-spl.bin
+
+  ifneq ($(CONFIG_TARGET_IMAGES_GZIP),)
+	gzip -f9n $(BIN_DIR)/$(IMG_PREFIX)-$(PROFILE)-sdcard-vfat-$(1).img
+  endif
 endef
 
 define Image/Build/Profile/A10-OLinuXino-Lime