At some point the driver started using symlinks w/ machine IDs for
finding/loading fw, and for some reason I thought it was a good idea to
not install those symlinks.
Fixes this failure when loading the brcmfmac driver:
brcmfmac mmc1:0001:1: Direct firmware load for brcm/brcmfmac43752-sdio.purism,librem5r4.bin failed with error -2
[ci:skip-build]: already built successfully in CI
pkgver was also updated to reflect that this is packaged from the latest
in git as of now. I probably should have done that from the start
(instead of ending up at the arbitrary '0.3'.)
