Input: pmic8xxx-keypad - change name of wakeup property

Wakeup property of device is not Linux-specific, it describes intended
system behavior regardless of the OS being used. Therefore let's drop
"linux," prefix, and, while at it, use the same name as I2C bus does:
"wakeup-source".

We keep parsing old name to keep compatibility with old DTSes.

Acked-by: Stephen Boyd <[e-mail]>
Signed-off-by: Dmitry Torokhov <[e-mail]>

Documentation/devicetree/bindings/input/qcom,pm8xxx-keypad.txt

···
 	Value type: <bool>
 	Definition: don't enable autorepeat feature.
 
-- linux,keypad-wakeup:
+- wakeup-source:
 	Usage: optional
 	Value type: <bool>
 	Definition: use any event on keypad as wakeup event.

drivers/input/keyboard/pmic8xxx-keypad.c

···
  */
 static int pmic8xxx_kp_probe(struct platform_device *pdev)
 {
+	struct device_node *np = pdev->dev.of_node;
 	unsigned int rows, cols;
 	bool repeat;
 	bool wakeup;
···
 		return -EINVAL;
 	}
 
-	repeat = !of_property_read_bool(pdev->dev.of_node,
-					"linux,input-no-autorepeat");
-	wakeup = of_property_read_bool(pdev->dev.of_node,
-					"linux,keypad-wakeup");
+	repeat = !of_property_read_bool(np, "linux,input-no-autorepeat");
+
+	wakeup = of_property_read_bool(np, "wakeup-source") ||
+		 /* legacy name */
+		 of_property_read_bool(np, "linux,keypad-wakeup");
 
 	kp = devm_kzalloc(&pdev->dev, sizeof(*kp), GFP_KERNEL);
 	if (!kp)