[DEPENDS] Make all the native_* packages build parallel

Summary:
It only affects cctools and protobuf since the others are either
using python or ninja.

Test Plan:

cd depends
make build-osx # This target should be benefit the most from this diff

Reviewers: #bitcoin_abc, deadalnix

Reviewed By: #bitcoin_abc, deadalnix

Differential Revision: https://reviews.bitcoinabc.org/D4858