linux-firmware: Update linux-firmware to 2018-10-18

linux-firmware: Update linux-firmware to 2018-10-18

Kalles ath10k PR was finally merged so update linux-firmware to
include those changes.

This is needed since disabling ath10k-firmware a lot of custom BDF-s
in board-2.bin-s are not available in previously outdated linux-firmware
board-2.bin-s.
This also includes support for boards currently using ipq-wifi and other
WIP ones.

Runtime tested on 8devices Jalapeno.

Signed-off-by: Robert Marko <robimarko@gmail.com>
(backported from f6a26f9a202474cf853b43191d119a1f6e65a5b7)