UPSTREAM: nds32: add support for TIF_NOTIFY_SIGNAL

[ Upstream commit b13e8bf6 ]

Wire up TIF_NOTIFY_SIGNAL handling for nds32.

Cc: Nick Hu <nickhu@andestech.com>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Vincent Chen <deanbo422@gmail.com>
Change-Id: Ic184206ffc5c6981fb590eb0103bc2f623f5402d
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 57e833a0)
Bug: 268174392
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>