Fix: Add psa arch test repo reference

Although current performance job doesn't use psa arch test
repo, CI reports an error when it tries to patch the non-
existent repo.

Signed-off-by: Jianliang Shen <jianliang.shen@arm.com>
Change-Id: I5fdabc774818a663864b79398fd20bf9babd518c
1 file changed