tree d787215e4983f24329264b5a404c1030716220d2
parent 9a91748c871670d4a6dabf95e6bfe44837687734
author Khalid Zubair <kzubair@cyngn.com> 1447895589 -0800
committer Ethan Chen <intervigil@gmail.com> 1451935644 -0800

kernel: prevent targets from being rebuilt needlessly

Fix some rules that listed directories as their dependencies.
Directories are always out-of-date because the rules that depend on
them touch file under the directories they depend on them.

Replace the directory dependencies with stamp file rules that handle
directory creation.

Change-Id: I2b36c846b6565b7f9aba5bb7583576ad300983b8