staging: sm7xxfb: make smtc_scr_info static

This symbol is never used anywhere else besides sm7xxfb.c
Signed-off-by: Max Perepelitsyn <mperepelitsyn@gmail.com>
Tested-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/sm7xxfb/sm7xxfb.c

@@ -111,7 +111,7 @@ static struct vesa_mode vesa_mode_table[] = {
 	{"0x31B", 1280, 1024, 24},
 };
 
-struct screen_info smtc_scr_info;
+static struct screen_info smtc_scr_info;
 
 /* process command line options, get vga parameter */
 static int __init sm7xx_vga_setup(char *options)