linux-firmware: add firmware for MT7915E

Add binary firmware v19530513 for MT7915E based devices
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Josh Boyer <jwboyer@kernel.org>

WHENCE

@@ -4597,6 +4597,18 @@ Licence: Redistributable. See LICENCE.mediatek for details.
 
 --------------------------------------------------------------------------
 
+Driver: mt7915e - MediaTek MT7915e Wireless MACs
+
+File: mediatek/mt7915_wm.bin
+Version: 19530513
+File: mediatek/mt7915_wa.bin
+Version: 19530513
+File: mediatek/mt7915_rom_patch.bin
+Version: 19530513
+
+Licence: Redistributable. See LICENCE.mediatek for details.
+
+--------------------------------------------------------------------------
 Driver: nfp - Netronome Flow Processor
 
 Link: netronome/nic_AMDA0081-0001_1x40.nffw -> nic/nic_AMDA0081-0001_1x40.nffw