Add binary firmware for MT7921 based devices File: mediatek/WIFI_MT7961_patch_mcu_1_2_hdr.bin Version: 20210122002654a File: mediatek/WIFI_RAM_CODE_MT7961_1.bin Version: 20210122002730 Signed-off-by: Sean Wang <sean.wang@mediatek.com> Signed-off-by: Josh Boyer <jwboyer@kernel.org>