[Arch Linux] iwlwifi가 디바이스를 찾지 못하는 문제 고쳐보기

rmmod iwlwifi

git clone https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git

cd linux-firmware

sudo cp iwlwifi-*.{ucode,pnvm} /lib/firmware/

modprobe iwlwifi