gitignore: Add build script

Change-Id: I5c3743ad0977bb9bcb18d148d03c402a215a0bff
msm: Add gitignore for autogenerated file

Change-Id: Ie49705b6a8e55216f5d7e7530b4295bdc63bf5db
Makefile: Enable ccache

Change-Id: I1363ad87c18beb58db2c66fd19bab7b672ee9bb3
hammerhead: Initial board files, additions and compile fixes

Change-Id: I460c9bdca3b262a80e1484da4a325cdba8cc2797