of: Use PLATFORM_DEVID_NONE definition

Use dedicated definition instead of plain -1 where it's appropriate.

No functional change intended.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rob Herring <robh@kernel.org>

drivers/of/device.c

@@ -58,7 +58,7 @@ int of_device_add(struct platform_device *ofdev)
 	/* name and id have to be set so that the platform bus doesn't get
 	 * confused on matching */
 	ofdev->name = dev_name(&ofdev->dev);
-	ofdev->id = -1;
+	ofdev->id = PLATFORM_DEVID_NONE;
 
 	/*
 	 * If this device has not binding numa node in devicetree, that is

drivers/of/platform.c

@@ -118,7 +118,7 @@ struct platform_device *of_device_alloc(struct device_node *np,
 	int rc, i, num_reg = 0, num_irq;
 	struct resource *res, temp_res;
 
-	dev = platform_device_alloc("", -1);
+	dev = platform_device_alloc("", PLATFORM_DEVID_NONE);
 	if (!dev)
 		return NULL;