drm: omapdrm: Remove filename from header and fix copyright tag

Having the filename in the header serves little purpose and is
often wrong after renames as it is here in several places, just
drop it from all omapdrm files.

While we are here unify the copyright tags to the TI recommended style.

Signed-off-by: Andrew F. Davis <afd@ti.com>
diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi5.c b/drivers/gpu/drm/omapdrm/dss/hdmi5.c
index b3221ca..7091197 100644
--- a/drivers/gpu/drm/omapdrm/dss/hdmi5.c
+++ b/drivers/gpu/drm/omapdrm/dss/hdmi5.c
@@ -1,7 +1,7 @@
 /*
  * HDMI driver for OMAP5
  *
- * Copyright (C) 2014 Texas Instruments Incorporated
+ * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
  *
  * Authors:
  *	Yong Zhi