linux-firmware: fix install for Chelsio T[45]

linux-firmware: fix install for Chelsio T[45]

It's broken since 1c9846ec "linux-firmware: Bump to the latest version"

Fix it by updating the name of the file to install.
Do not use * since it would install also old versions that would take
1MB extra space in the target.

Signed-off-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Cc: Peter Korsgaard <peter@korsgaard.com>
Cc: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>