UPSTREAM: ia64: add support for TIF_NOTIFY_SIGNAL

[ Upstream commit b269c229 ]

Wire up TIF_NOTIFY_SIGNAL handling for ia64.

Cc: linux-ia64@vger.kernel.org
[axboe: added fixes from Mike Rapoport <rppt@kernel.org>]
Change-Id: Ib1e6bb561f1a6ddf9be818d35e295b53f0d1f1fd
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 751fedb9)
Bug: 268174392
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>