[ Upstream commit 16ad9501b1f2edebe24f8cf3c09da0695871986b ]

This fixes the case when CONFIG_QCOM_SCM is not enabled, and linux/errno.h
has not been included previously.
Signed-off-by: NJonathan Marek <jonathan@marek.ca>
Reviewed-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: NAndy Gross <andy.gross@linaro.org>
Signed-off-by: NSasha Levin <sashal@kernel.org>