Conditionalize the compilation of the envctrl.c front-end of pcf(4) additionally on ebus(4) as the 'SUNW,envctrl' devices (as well as 'SUNW,envctrltwo' and 'SUNW,rasctrl', which we might want to also support in envctrl.c in the future) are only found on EBus.
Conditionalize the compilation of the envctrl.c front-end of pcf(4)
additionally on ebus(4) as the 'SUNW,envctrl' devices (as well as
'SUNW,envctrltwo' and 'SUNW,rasctrl', which we might want to also
support in envctrl.c in the future) are only found on EBus.

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase