alpha: add support for TIF_NOTIFY_SIGNAL

stable inclusion
from stable-v5.10.162
commit 30b78a17ac8f21751426edbe72fabfc1d825e9a0
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7P7OH

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=30b78a17ac8f21751426edbe72fabfc1d825e9a0



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[ Upstream commit 5a9a8897 ]

Wire up TIF_NOTIFY_SIGNAL handling for alpha.

Cc: linux-alpha@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>