lib/lzo: huge LZO decompression speedup on ARM by using unaligned access

Signed-off-by: Markus F.X.J. Oberhumer <markus@oberhumer.com>
Signed-off-by: Dan Trifan <jimsth@gmail.com>
arch/arm / defconfig: add and enable Tuna optimized VMSPLIT

By allocating more memory to the kernel (rather than userspace),
vmalloc can be increased without invoking highmem.

Signed-off-by: Dan Trifan <jimsth@gmail.com>
ascaswq

Signed-off-by: Dan Trifan <jimsth@gmail.com>