Fixes the loading of the dEQP config file from the CI change.

Bug: b/140172528
Change-Id: Iabe0b66fd305cdd9c8bb0869c1ea8082cf7d236c
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/38029
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Reviewed-by: Chris Forbes <chrisforbes@google.com>
Tested-by: Ben Clayton <bclayton@google.com>