drivers/char/isicom.c: make a struct static

@@ -381,7 +381,7 @@
 	.ioctl		= ISILoad_ioctl,
 };
 
-struct miscdevice isiloader_device = {
+static struct miscdevice isiloader_device = {
 	ISILOAD_MISC_MINOR, "isictl", &ISILoad_fops
 };