Bump lld LINKER_FREEBSD_VERSION for reproducibility fix

The upstream fix to make lld output for our EFI loaders reproducible
again was committed in 54521a2ff93a. Bump lld's LINKER_FREEBSD_VERSION
to be able to check this in the EFI loader Makefile.

MFC after: 3 days

(cherry picked from commit f97c7fdc59d252cc8611968ffac541d4b8342b8b)