ARM: 8793/1: signal: replace __put_user_error with __put_user

Commit 18ea66bd6e7a95bdc598223d72757190916af28b upstream.

With Spectre-v1.1 mitigations, __put_user_error is pointless. In an attempt
to remove it, replace its references in frame setups with __put_user.

Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David A. Long <dave.long@linaro.org>
Reviewed-by: Julien Thierry <julien.thierry@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>