Add recipe to build the C based gRPC libraries.
Regular gRPC build process uses git sub-modules for dependcies on external
libraries/tools (c-ares, protobuf, etc). This recipe add patches and configs
to use libraries provided by Yocto/bitbake/OE.
grpc-native is required to build grpc for target - it uses some grpc plugins
built for host.
Signed-off-by: Alexey Firago <alexey_firago@mentor.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
