Use git format of patches

To avoid dependency on patch utility and to have standardized look
of patch file this change uses git-format and git-apply to patch
charts.

Change-Id: I1c63334619bf6091b5ab50a4eebfadb3c28a2616
Issue-ID: OOM-1634
Signed-off-by: Milan Verespej <m.verespej@partner.samsung.com>
2 files changed