[PCMCIA] make cardbus_type static

Patch from Adrian Bunk

Since there's no user outside this file, cardbus_type in
drivers/pcmcia/yenta_socket.c can be made static.

Signed-off-by: Adrian Bunk
Signed-off-by: Russell King

drivers/pcmcia/yenta_socket.c

@@ -688,7 +688,7 @@ enum {
  * Different cardbus controllers have slightly different
  * initialization sequences etc details. List them here..
  */
-struct cardbus_type cardbus_type[] = {
+static struct cardbus_type cardbus_type[] = {
 	[CARDBUS_TYPE_TI]	= {
 		.override	= ti_override,
 		.save_state	= ti_save_state,