Add coverity badge2
Add coverity badge2

Change-Id: Ie6154cc0f10829dbceb576bbdca2039e5d9b170f
Signed-off-by: Brian McGillion <e5584ecd8ee5868d4650d758a8412085be93f4f1@intel.com>

Open-TEE/project,Open-TEE/project,Open-TEE/project