As of now OTP is being correctly parsed and the driver requires to parse pre-caldata to follow corresponding routine.
Rename cal file into pre-calfile so the board initialized correctly with API 2 board data (board-2.bin).
Also remove the now unneeded for qca9984 board.bin symlink to 5GHz calfile.
Signed-off-by: Pavel Kubelun <be.dissent@gmail.com>