Added call to env-update after installing gcc libraries into a board root.
Added call to env-update after installing gcc libraries into a board root.

This allows ld.so.cache to be properly regenerated.

BUG=chromium-os:22324
TEST=./cbuildbot tegra2_kaen-release. Run desktopui_FontConfig and check it succeeds.

Change-Id: I546c4ef1e5d61117d416f681cb5e75e884600ed2
Reviewed-on: https://gerrit.chromium.org/gerrit/11063
Reviewed-by: Grant Grundler <fd58b8293aeebb072b32124aef6e8da71dd5739c@chromium.org>
Reviewed-by: Doug Anderson <49983c4a76b998672954ed5edf4a62db4a336502@chromium.org>
Reviewed-by: David James <f231dc574bbeb62604660cbc162d1b8642a0a3af@chromium.org>
Commit-Ready: Raymes Khoury <348ad72dc039a127ca70ef38e5de4eebe052b884@chromium.org>
Tested-by: Raymes Khoury <348ad72dc039a127ca70ef38e5de4eebe052b884@chromium.org>

mgireesh05/dev-util,marineam/coreos-dev-util,mgireesh05/dev-util,coreos/dev-util,mgireesh05/dev-util,marineam/coreos-dev-util,coreos/dev-util,coreos/dev-util