ath10k-firmware: update board data for qca9984

Current board-2.bin file for qca9984 in Kvalo's repo is from branch
10.4-3.2, while board-2.bin file in code-aurora repo is newer and
corresponds to the branch 10.4-3.3, the same as recently updated firmware.

Considering that it's better to have all parts from the same branch
we are updating board-2.bin as well.

Signed-off-by: Pavel Kubelun <be.dissent@gmail.com>