etnaviv_cl_test_gc3000: Don't forget state setup
etnaviv_cl_test_gc3000: Don't forget state setup

PA_SYSTEM_MODE and GL_API_MODE weren't set up.
This seems to have no apparent effect but do it just in case.

Signed-off-by: Wladimir J. van der Laan <bbc07dc96bb50bf6868a2ddfc4dae14fbed703d9@gmail.com>

laanwj/etnaviv_gpu_tests,laanwj/etnaviv_gpu_tests