Input: sirfsoc-onkey - set the capability of reporting KEY_POWER

commit a1a75210 moved to report EV_KEY event(KEY_POWER) instead of
reporting EV_PWR event(KEY_SUSPEND), but it didn't enable the capability, so
the KEY_POWER will not be reported to userspace by input core. this patch fixes
the issue.
Signed-off-by: Xianglong Du <Xianglong.Du@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/misc/sirfsoc-onkey.c

@@ -136,6 +136,7 @@ static int sirfsoc_pwrc_probe(struct platform_device *pdev)
 	pwrcdrv->input->name = "sirfsoc pwrckey";
 	pwrcdrv->input->phys = "pwrc/input0";
 	pwrcdrv->input->evbit[0] = BIT_MASK(EV_KEY);
+	input_set_capability(pwrcdrv->input, EV_KEY, KEY_POWER);
 
 	INIT_DELAYED_WORK(&pwrcdrv->work, sirfsoc_pwrc_report_event);