mt76xx: Move the old Mediatek WiFi firmware to mediatek

There's a few original Mediatek firmware still in the
firmware root so move them to where the rest of the
Mediatek WiFi firmware reside and link them back to the
old location so there's a transition.

Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Josh Boyer <jwboyer@kernel.org>

WHENCE

@@ -1454,8 +1454,9 @@ Downloaded from http://www.ralinktech.com/ralink/Home/Support/Linux.html
 
 Driver: mt7601u - MediaTek MT7601U Wireless MACs
 
-File: mt7601u.bin
+File: mediatek/mt7601u.bin
 Version: 34
+Link: mt7601u.bin -> mediatek/mt7601u.bin
 
 Licence: Redistributable. See LICENCE.ralink_a_mediatek_company_firmware for details
 
@@ -3845,7 +3846,8 @@ File rtl_bt/rtl8761bu_config.bin
 
 Driver: btmtk_usb - Bluetooth USB driver
 
-File: mt7650.bin
+File: mediatek/mt7650.bin
+Link: mt7650.bin -> mediatek/mt7650.bin
 
 Licence: Redistributable. See LICENCE.ralink_a_mediatek_company_firmware for details
 
@@ -5250,11 +5252,13 @@ Licence: Redistributable. See LICENCE.mediatek for details.
 
 Driver: mt76x2e - MediaTek MT76x2 Wireless MACs
 
-File: mt7662.bin
+File: mediatek/mt7662.bin
 Version: 1.9
+Link: mt7662.bin -> mediatek/mt7662.bin
 
-File: mt7662_rom_patch.bin
+File: mediatek/mt7662_rom_patch.bin
 Version: 0.0.2_P69
+Link: mt7662_rom_patch.bin -> mediatek/mt7662_rom_patch.bin
 
 Licence: Redistributable. See LICENCE.ralink_a_mediatek_company_firmware for details