Blocks SIGINT in the worker processes to prevent them from running the
parent process signal handler, which causes them to deadlock under
certain circumstances.
[YOCTO #14034]
(Bitbake rev: 9f4207f4b598f549cbd4159841c720276736f23b)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>