Revert "odroid: Disable the exynos-mem block device on all ubuntu defconfigs"

This reverts commit 5337ab743576956aa823136da1451374f66537a0.
	lib/lzo: Update LZO compression to current upstream version

	This commit updates the kernel LZO code to the current upsteam version
	which features a significant speed improvement - benchmarking the Calgary
	and Silesia test corpora typically shows a doubled performance in
	both compression and decompression on modern i386/x86_64/powerpc machines.