Disable squashfs for au1000 target since it does not allow the user to use the whole flash space

git-svn-id: svn://svn.openwrt.org/openwrt/branches/buildroot-ng/openwrt@4107 3c298f89-4303-0410-b956-a3cf2f4a3e73

Config.in

@@ -64,6 +64,7 @@ menu "Target Images"
 		depends !LINUX_2_6_ARUBA
 		depends !LINUX_2_6_XSCALE
 		depends !TARGET_ROOTFS_INITRAMFS
+		depends !LINUX_2_6_AU1000
 		help
 		  Build a squashfs-lzma root filesystem