As poky/meta completely removed reference of iwlwifi-firmware-8000C, it is
being added in bbappend as workaround. Once poky/meta fixes this issue, this
patch can be reverted.
Please modify the commit title to "Workaround for the iwlwifi-firmware-8000C build failure" to make it clearer. Other than that, it looks OK as a temp fix.
As poky/meta completely removed reference of iwlwifi-firmware-8000C, it is being added in bbappend as workaround. Once poky/meta fixes this issue, this patch can be reverted.