comms/hackrf: Port update 2017.02.1 -> 2021.03.1.

[Tomek CEDRO]

Can anyone with a free moment could take a look at:

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=266774

https://github.com/freebsd/freebsd-ports/pull/132

Thank you :-)
Tomek

-- 
CeDeROM, SQ7MHZ, http://www.tomek.cedro.info