drm: correct historic mis-attribution of copyright

From: Keith Withwell <keithw@tungstengraphics.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>

drivers/char/drm/sis_ds.c

@@ -134,7 +134,7 @@ int setDestroy(set_t *set)
 
 /*
  * GLX Hardware Device Driver common code
- * Copyright (C) 1999 Keith Whitwell
+ * Copyright (C) 1999 Wittawat Yamwong
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -149,7 +149,7 @@ int setDestroy(set_t *set)
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * KEITH WHITWELL, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM, 
+ * WITTAWAT YAMWONG, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM, 
  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 
  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE 
  * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

drivers/char/drm/sis_ds.h

@@ -58,7 +58,7 @@ int setDestroy(set_t *set);
 
 /*
  * GLX Hardware Device Driver common code
- * Copyright (C) 1999 Keith Whitwell
+ * Copyright (C) 1999 Wittawat Yamwong
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -73,7 +73,7 @@ int setDestroy(set_t *set);
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * KEITH WHITWELL, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM, 
+ * WITTAWAT YAMWONG, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM, 
  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 
  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE 
  * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.