This adds a helper function for reading the rotation (panel
orientation) from the device tree.
Reviewed-by: NSam Ravnborg <sam@ravnborg.org>
Tested-by: NDmitry Osipenko <digetx@gmail.com>
Signed-off-by: NDerek Basehore <dbasehore@chromium.org>
Signed-off-by: NDmitry Osipenko <digetx@gmail.com>
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200813215609.28643-2-digetx@gmail.com