UPSTREAM: lib/lzo: tidy-up ifdefs

Patch series "lib/lzo: performance improvements", v5.

This patch (of 3):

Modify the ifdefs in lzodefs.h to be more consistent with normal kernel
macros (e.g., change __aarch64__ to CONFIG_ARM64).

Link: http://lkml.kernel.org/r/20190205141950.9058-2-dave.rodgman@arm.com
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: David S. Miller <davem@davemloft.net>
Cc: Nitin Gupta <nitingupta910@gmail.com>
Cc: Richard Purdie <rpurdie@openedhand.com>
Cc: Markus F.X.J. Oberhumer <markus@oberhumer.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Sonny Rao <sonnyrao@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Matt Sealey <matt.sealey@arm.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 95777591d07e08ebb95bb373237fcfbf54fcbf5c)

BUG=907138
TEST=python -c 'l = [0] * 1024*1024*400; l2 = [0] * 1024*1024*400'
TEST=zramctl; dmesg
TEST=zramctl should show evidence of swapping using the lzo algorithm,
TEST=and dmesg should not report any errors

Change-Id: Ib3b7ddce76cbf908691a7f07c60c72ec1971d2ba
Reviewed-on: https://chromium-review.googlesource.com/1528456
Commit-Ready: Dave Rodgman <dave.rodgman@arm.com>
Tested-by: Dave Rodgman <dave.rodgman@arm.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Sonny Rao <sonnyrao@chromium.org>