USB: core: update comment to match current function name

Found while debugging a USB problem and trying to find the mentioned function.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 84c18971..5da546c 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -3629,7 +3629,7 @@
 	}
 
 	if (!parent_hdev) {
-		/* this requires hcd-specific logic; see OHCI hc_restart() */
+		/* this requires hcd-specific logic; see ohci_restart() */
 		dev_dbg(&udev->dev, "%s for root hub!\n", __func__);
 		return -EISDIR;
 	}