When compiling libtirpc, without RPC support available on the host
machine, the build of the rpcgen host program because it cannot find
the netconfig.h and rpc/types.h headers. Instead of relying on the
system-provided ones, let's use the ones included in the libtirpc
source code by patching the rpcgen build logic.
Signed-off-by: Dagg Stompler <daggs@gmx.com>
[Thomas: reword commit log.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>