drm: lindent the drm directory.

I've been threatening this for a while, so no point hanging around.
This lindents the DRM code which was always really bad in tabbing department.
I've also fixed some misnamed files in comments and removed some trailing
whitespace.

Signed-off-by: Dave Airlie <airlied@linux.ie>
diff --git a/drivers/char/drm/sis_drm.h b/drivers/char/drm/sis_drm.h
index e99c3a4..8f273da 100644
--- a/drivers/char/drm/sis_drm.h
+++ b/drivers/char/drm/sis_drm.h
@@ -39,4 +39,4 @@
 	unsigned int offset, size;
 } drm_sis_fb_t;
 
-#endif /* __SIS_DRM_H__ */
+#endif				/* __SIS_DRM_H__ */