UPSTREAM: hexagon: add support for TIF_NOTIFY_SIGNAL

[ Upstream commit aeec8193 ]

Wire up TIF_NOTIFY_SIGNAL handling for hexagon.

Cc: linux-hexagon@vger.kernel.org
Acked-by: Brian Cain <bcain@codeaurora.org>
Change-Id: I68ddb4388560d3caa828b12912da7d54ff42df10
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 19f3e328)
Bug: 268174392
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>