Provide a basic driver to control Cortex M4 co-processor
Signed-off-by: NErin Lo <erin.lo@mediatek.com>
Signed-off-by: NNicolas Boichat <drinkcat@chromium.org>
Signed-off-by: NPi-Hsun Shih <pihsun@chromium.org>
Link: https://lore.kernel.org/r/20191112110330.179649-3-pihsun@chromium.orgSigned-off-by: NBjorn Andersson <bjorn.andersson@linaro.org>