cpcap-charger: generate events for userspace

commit fd10606f93a149a9f3d37574e5385b083b4a7b32 upstream.

The driver doesn't generate uevents on charger connect/disconnect.
This leads to UPower not detecting when AC is on or off... and that is
bad.

Reported by Arthur D. on github (
https://github.com/maemo-leste/bugtracker/issues/206 ), thanks to
Merlijn Wajer for suggesting a fix.

Cc: stable@kernel.org
Signed-off-by: NPavel Machek <pavel@ucw.cz>
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NSebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/power/supply/cpcap-charger.c

@@ -458,6 +458,7 @@ static void cpcap_usb_detect(struct work_struct *work)
 			goto out_err;
 	}
 
+	power_supply_changed(ddata->usb);
 	return;
 
 out_err: