UPSTREAM: arm: trim _TIF_WORK_MASK, get rid of useless test and branch...

(cherry pick from commit 84849b3ed8081e9e2eb0e441c699eda807853cb6)

Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Bug: 9674955
Bug: 25773781
Change-Id: I98851471dfaeb603ae7d517c93fa8ae9184be252
2 files changed