staging: fbtft: fix allyesconfig build

There are two functions call reset() so the allyesconfig breaks.  Let's
make this one static.
Reported-by: NJim Davis <jim.epost@gmail.com>
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Tested-by: NJim Davis <jim.epost@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/fbtft/fb_agm1264k-fl.c

@@ -89,7 +89,7 @@ static int init_display(struct fbtft_par *par)
 	return 0;
 }
 
-void reset(struct fbtft_par *par)
+static void reset(struct fbtft_par *par)
 {
 	if (par->gpio.reset == -1)
 		return;