Split target/product/sdk.mk into sdk.git

This changes target/product/sdk.mk so that the list of tools
and libs to build for the SDK be actually defined in both
sdk.git and development.git.

Depends on dev.git change I6bbc6644a and sdk.git change Id270eba6

Change-Id: I790df85ea8620f73c769aec0f92f474de60b63f9
1 file changed