fix(tf-cov-make): modify failing build option to DEBUG=0

Currently one build failures due to bl31 image overflow is causing
coverity loss in CI, So disable DEBUG builds for them temporarily
until we get a fix in place.

Change-Id: I908fef51b95ee29f15fe20e1e1c49a947b707853
Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
1 file changed