[PATCH] drm: Document that drm_panel_orientation_quirks.c is shared with fbdev

Add a comment to the DRM_PANEL_ORIENTATION_QUIRKS documenting that the
reason for a separate Kconfig for this is because
drm_panel_orientation_quirks.c code is shared with fbdev.

Suggested-by: Bartlomiej Zolnierkiewicz <redacted>
Signed-off-by: Hans de Goede <redacted>
---
 drivers/gpu/drm/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 0b166e626eb6..d853989848d6 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig

@@ -27,6 +27,7 @@ config DRM_MIPI_DSI
 	bool
 	depends on DRM
 
+# Separate option because drm_panel_orientation_quirks.c is shared with fbdev
 config DRM_PANEL_ORIENTATION_QUIRKS
 	tristate
 

-- 
2.14.3