hd06mp2, hd12: Want many parallel clients (20+) and lets itself
be balanced.

fhd26u7, 4k12u7: Simulates either encoder or decoder with VCS1
(HEVC) dependency and some balancing VCS usage. Needs fewer
clients (3-6).

hd01, hd17i4: Mostly RCS limited targetting maximum execution
speed for a single client. Must not be hampered by incorrect
balancing decisions.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>