bootcache: Updating common.mk to ToT to enable profiling

This update replaces the current common.mk used in this project with the newest
version. This will allow all of the common.mk based projects to be on the same
version for debugging and enables profiling support.

BUG=chromium-os:37854
TEST=Exectuted the following commands to confirm the build works:
     MODE=profiling cros_workon_make --board=link
     MODE=profiling cros_workon_make --board=link --test
     cros_workon_make --board=link
     cros_workon_make --board=link --test
     Repeated these with emerge-link, USE=profiling, and
     FEATURES=test as need.
     For the emerge command with profiling and testing enable, confirmed the
     appropriate coverage files were created in /usr/share/profiling/...

Change-Id: I6fe9a27520f8c449659fd5679362568039f212c4
Reviewed-on: https://gerrit.chromium.org/gerrit/42791
Tested-by: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Paul Taysom <taysom@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
1 file changed