drivers/*: mark variables with uninitialized_var()

Mark variables in drivers/* with uninitialized_var() if such a warning
appears, and analysis proves that the var is initialized properly on all
paths it is used.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c
index 7b08394..9e0adfe 100644
--- a/drivers/char/cyclades.c
+++ b/drivers/char/cyclades.c
@@ -4466,10 +4466,10 @@
 static int __devinit cy_init_card(struct cyclades_card *cinfo)
 {
 	struct cyclades_port *info;
-	u32 mailbox;
+	u32 uninitialized_var(mailbox);
 	unsigned int nports;
 	unsigned short chip_number;
-	int index, port;
+	int uninitialized_var(index), port;
 
 	spin_lock_init(&cinfo->card_lock);