usb: typec: hd3ss3220_irq() can be static

Fixes: 1c48c759 ("usb: typec: driver for TI HD3SS3220 USB Type-C DRP port controller")
Signed-off-by: kbuild test robot <lkp@intel.com>
Link: https://lore.kernel.org/r/20191005215727.qfypxoswkiyu45ak@332d0cec05f4Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/typec/hd3ss3220.c

@@ -120,7 +120,7 @@ static void hd3ss3220_set_role(struct hd3ss3220 *hd3ss3220)
 	}
 }
 
-irqreturn_t hd3ss3220_irq(struct hd3ss3220 *hd3ss3220)
+static irqreturn_t hd3ss3220_irq(struct hd3ss3220 *hd3ss3220)
 {
 	int err;