HID: playstation: DS4: Don't fail on FW/HW version request

Some third-party controllers can't report firmware/hardware version.

Unlike for the DualSense, the driver does not use these values for
anything in the DualShock 4 case, but merely exposes them via sysfs.
They will simply be 0x0.
Signed-off-by: Max Staudt <max@enpas.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

drivers/hid/hid-playstation.c

@@ -2558,8 +2558,8 @@ static struct ps_device *dualshock4_create(struct hid_device *hdev)
 
 	ret = dualshock4_get_firmware_info(ds4);
 	if (ret) {
-		hid_err(hdev, "Failed to get firmware info from DualShock4\n");
-		return ERR_PTR(ret);
+		hid_warn(hdev, "Failed to get firmware info from DualShock4\n");
+		hid_warn(hdev, "HW/FW version data in sysfs will be invalid.\n");
 	}
 
 	ret = ps_devices_list_add(ps_dev);