LinuxKPI: 80211: make HW_CRYPTO compileable again

Rename TRY_HW_CRYPTO to LKPI_80211_HW_CRYPTO for consitency and make
it compileable again in case someone wants to sit down and make it
work. It's probably not too much to do. Otherwise I might eventually
get around to it.

Obtained from: bz/wireless-dev
Sponsored by: The FreeBSD Foundation

(cherry picked from commit b35f6cd066128f8cf0b7f3125529f59dd8ba3059)