input: pmic8xxx-pwrkey: Keep pdata after probe

The missing bits from upstream vs internal version of this driver

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

drivers/input/misc/pmic8xxx-pwrkey.c

@@ -30,10 +30,12 @@
 /**
  * struct pmic8xxx_pwrkey - pmic8xxx pwrkey information
  * @key_press_irq: key press irq number
+ * @pdata: platform data
  */
 struct pmic8xxx_pwrkey {
 	struct input_dev *pwr;
 	int key_press_irq;
+	const struct pm8xxx_pwrkey_platform_data *pdata;
 };
 
 static irqreturn_t pwrkey_press_irq(int irq, void *_pwrkey)
@@ -109,6 +111,8 @@ static int __devinit pmic8xxx_pwrkey_probe(struct platform_device *pdev)
 	if (!pwrkey)
 		return -ENOMEM;
 
+	pwrkey->pdata = pdata;
+
 	pwr = input_allocate_device();
 	if (!pwr) {
 		dev_dbg(&pdev->dev, "Can't allocate power button\n");