Add support for building gcc/binutils for a specific board for bootstrap_compiler.py.

TEST=None
BUG=None

Change-Id: I11edfd930b3c4d1985731a6912dec64e941ba03f
Reviewed-on: https://chrome-internal-review.googlesource.com/150959
Reviewed-by: Han Shen <shenhan@google.com>
Commit-Queue: Han Shen <shenhan@google.com>
Tested-by: Han Shen <shenhan@google.com>
2 files changed