- remove PRSERV_PORT variable
- use 'hostname:port' as PRSERV_HOST format
- remove USE_PR_SERV variable
- one can activate PRS by setting PRSERV_HOST
[YOCTO #3744]
(From OE-Core rev: e00f49de8b1f79c3e07b887d257bd75a46052fa0)
Signed-off-by: Constantin Musca <constantinx.musca@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>