trivial: Fix misspelling of firmware

Fix misspelling of firmware.

Signed-off-by: Nick Andrew <nick@nick-andrew.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index f7efcec..ed60b18 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -11225,7 +11225,7 @@
 		return tg3_phy_init(tp);
 
 	/* Reading the PHY ID register can conflict with ASF
-	 * firwmare access to the PHY hardware.
+	 * firmware access to the PHY hardware.
 	 */
 	err = 0;
 	if ((tp->tg3_flags & TG3_FLAG_ENABLE_ASF) ||