protobuf-c: Inherit pkgconfig
protobuf-c: Inherit pkgconfig

Finding the libprotobuf.* incorrectly if the host have pkgconfig

Signed-off-by: Jianchuan Wang <d0a69f3233362f0cda6be7f75886ab29982c2aa0@windriver.com>
Signed-off-by: Bruce Ashfield <284cc737d174a260eec2a2a6324a304f84b1ae0f@windriver.com>

lgirdk/meta-virtualization,lgirdk/meta-virtualization,cardoe/meta-virtualization,cjp256/meta-virtualization,lgirdk/meta-virtualization,lgirdk/meta-virtualization,cardoe/meta-virtualization,cardoe/meta-virtualization,cjp256/meta-virtualization,cjp256/meta-virtualization,lgirdk/meta-virtualization