swap logic on squashfs version selection

SVN-Revision: 18163

include/image.mk

@@ -23,15 +23,15 @@ JFFS2OPTS     :=  --pad --big-endian --squash
 SQUASHFS_OPTS :=  -be
 endif
 
-ifneq ($(CONFIG_LINUX_2_6_30)$(CONFIG_LINUX_2_6_31),)
-USE_SQUASHFS4 := y
+ifneq ($(CONFIG_LINUX_2_6_21)$(CONFIG_LINUX_2_6_25)$(CONFIG_LINUX_2_6_28),)
+USE_SQUASHFS3 := y
 endif
 
-ifneq ($(USE_SQUASHFS4),)
+ifneq ($(USE_SQUASHFS3),)
+MKSQUASHFS_CMD := $(STAGING_DIR_HOST)/bin/mksquashfs-lzma
+else
 MKSQUASHFS_CMD := $(STAGING_DIR_HOST)/bin/mksquashfs4
 SQUASHFS_OPTS  := -lzma -processors 1
-else
-MKSQUASHFS_CMD := $(STAGING_DIR_HOST)/bin/mksquashfs-lzma
 endif
 
 JFFS2_BLOCKSIZE ?= 64k 128k