[AGPGART] bump copyright dates

drivers/char/agp/agp.h

 /*
  * AGPGART
- * Copyright (C) 2002 Dave Jones
+ * Copyright (C) 2002-2003 Dave Jones
  * Copyright (C) 1999 Jeff Hartmann
  * Copyright (C) 1999 Precision Insight, Inc.
  * Copyright (C) 1999 Xi Graphics, Inc.

drivers/char/agp/amd-k8-agp.c

 /* 
- * Copyright 2001,2002 SuSE Labs
+ * Copyright 2001-2003 SuSE Labs
  * Distributed under the GNU public license, v2.
  * 
  * This is a GART driver for the AMD K8 northbridge and the AMD 8151 

drivers/char/agp/backend.c

 /*
  * AGPGART driver backend routines.
- * Copyright (C) 2002 Dave Jones.
+ * Copyright (C) 2002-2003 Dave Jones.
  * Copyright (C) 1999 Jeff Hartmann.
  * Copyright (C) 1999 Precision Insight, Inc.
  * Copyright (C) 1999 Xi Graphics, Inc.

drivers/char/agp/frontend.c

 /*
  * AGPGART driver frontend
- * Copyright (C) 2002 Dave Jones
+ * Copyright (C) 2002-2003 Dave Jones
  * Copyright (C) 1999 Jeff Hartmann
  * Copyright (C) 1999 Precision Insight, Inc.
  * Copyright (C) 1999 Xi Graphics, Inc.