vfe-170 and vfe-175 can be supported in the same file with some minimal
indirection to differentiate between the silicon versions.

sdm845 uses vfe-170, sc8280xp uses vfe-175-200. Lets rename the file to
capture its wider scope than vfe-170 only.
Acked-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>