HID: logitech: drop outdated references to unifying receivers

The hid-logitech-{dj,hidpp} were originally developed for unifying
receivers but since then they have evolved and now support other types
of receivers and devices. This patch adjusts the original descriptions
with this in mind.
Signed-off-by: Filipe Laíns <lains@archlinux.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/Kconfig

@@ -538,14 +538,14 @@ config HID_LOGITECH
 	Support for Logitech devices that are not fully compliant with HID standard.
 
 config HID_LOGITECH_DJ
-	tristate "Logitech Unifying receivers full support"
+	tristate "Logitech receivers full support"
 	depends on USB_HID
 	depends on HIDRAW
 	depends on HID_LOGITECH
 	select HID_LOGITECH_HIDPP
 	---help---
-	Say Y if you want support for Logitech Unifying receivers and devices.
-	Unifying receivers are capable of pairing up to 6 Logitech compliant
+	Say Y if you want support for Logitech receivers and devices.
+	Logitech receivers are capable of pairing multiple Logitech compliant
 	devices to the same receiver. Without this driver it will be handled by
 	generic USB_HID driver and all incoming events will be multiplexed
 	into a single mouse and a single keyboard device.

drivers/hid/hid-logitech-dj.c

 // SPDX-License-Identifier: GPL-2.0-only
 /*
- *  HID driver for Logitech Unifying receivers
+ *  HID driver for Logitech receivers
  *
  *  Copyright (c) 2011 Logitech
  */
@@ -701,7 +701,7 @@ static void logi_dj_recv_add_djhid_device(struct dj_receiver_dev *djrcv_dev,
 			type_str, dj_hiddev->product);
 	} else {
 		snprintf(dj_hiddev->name, sizeof(dj_hiddev->name),
-			"Logitech Unifying Device. Wireless PID:%04x",
+			"Logitech Wireless Device PID:%04x",
 			dj_hiddev->product);
 	}
 

drivers/hid/hid-logitech-hidpp.c

 // SPDX-License-Identifier: GPL-2.0-only
 /*
- *  HIDPP protocol for Logitech Unifying receivers
+ *  HIDPP protocol for Logitech receivers
  *
  *  Copyright (c) 2011 Logitech (c)
  *  Copyright (c) 2012-2013 Google (c)