scripts: add checkpatch.pl & git hooks

Change-Id: I29e5f7a99e8dd92511c0b1d099f3e1a2f37d7a72

scripts/git_hooks/install_git_hooks.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+CURDIR=$(dirname "$(readlink -m "$0")")
+TOPDIR=$(git rev-parse --show-toplevel)
+HOOKDIR=$TOPDIR/.git/hooks
+
+cp -f "$CURDIR/pre-commit" "$HOOKDIR"
+chmod +x  "$HOOKDIR/pre-commit"
+
+cp -f "$CURDIR/commit-msg" "$HOOKDIR"
+chmod +x "$HOOKDIR/commit-msg"
+