Refer to https://dev.openwrt.org/browser/trunk/target/linux/generic-2.6/patches-2.6.31?rev=17686
051-squashfs_pcomp.patch - https://dev.openwrt.org/export/17686/trunk/target/linux/generic-2.6/patches-2.6.31/051-squashfs_pcomp.patch
052-pcomp_lzma_support.patch - https://dev.openwrt.org/export/17686/trunk/target/linux/generic-2.6/patches-2.6.31/052-pcomp_lzma_support.patch
053-squashfs_lzma.patch - https://dev.openwrt.org/export/17686/trunk/target/linux/generic-2.6/patches-2.6.31/053-squashfs_lzma.patch