UPSTREAM: nios32: add support for TIF_NOTIFY_SIGNAL

[ Upstream commit 42020064 ]

Wire up TIF_NOTIFY_SIGNAL handling for nios32.

Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Acked-by: Ley Foon Tan <ley.foon.tan@intel.com>
Change-Id: I11eed799c048247128e1acfb241f97cc3703d5b2
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit cf3c6486)
Bug: 268174392
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>