fix: update partial success for DA test case

This patch returns a SUCCESS error code on partial success of DA
testcase so that TF-RMM can progress with partial merge of DA
patch stack. This will be reverted when the entire DA
flow is implemented in TF-RMM.

Signed-off-by: Mate Toth-Pal <mate.toth-pal@arm.com>
Change-Id: I39a682fd4a346b8f34b51a20e3b5868f71a0f214
1 file changed