viafb: move some include files to include/linux

These are the files which should be available to subdevices compiled
outside of drivers/video/via.

Cc: ScottFang@viatech.com.cn
Cc: JosephChan@via.com.tw
Cc: Harald Welte <laforge@gnumonks.org>
Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
diff --git a/drivers/video/via/via_utility.c b/drivers/video/via/via_utility.c
index 5757031..d05ccb6 100644
--- a/drivers/video/via/via_utility.c
+++ b/drivers/video/via/via_utility.c
@@ -19,7 +19,7 @@
  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
-#include "via-core.h"
+#include <linux/via-core.h>
 #include "global.h"
 
 void viafb_get_device_support_state(u32 *support_state)