ACPI / property: Don't evaluate objects for devices w/o handle

Fabricated devices such as LNXPWRBN lack a handle, causing evaluation
of _CCA and _DSD to always fail with AE_BAD_PARAMETER. While that is
merely a (negligible) waste of processing power, evaluating a _DSM for
them (such as Apple's device properties _DSM which we're about to add)
results in an ugly error:

ACPI: \: failed to evaluate _DSM (0x1001)

Avoid by not evaluating _DSD and the upcoming _DSM for devices without
handle.

Acked-by: Mika Westerberg <[e-mail]>
Signed-off-by: Lukas Wunner <[e-mail]>
Signed-off-by: Rafael J. Wysocki <[e-mail]>

drivers/acpi/property.c

···
 
 	INIT_LIST_HEAD(&adev->data.subnodes);
 
+	if (!adev->handle)
+		return;
+
 	/*
 	 * Check if ACPI_DT_NAMESPACE_HID is present and inthat case we fill in
 	 * Device Tree compatible properties for this device.