Until now, the workgroups test computed the work-group size for
execution by querying the maximum number of work-items based on the
kernel. This returns the overall limit on workgroup size but not the
limits in each specific dimension. This change additionally restricts
the work-group size to the device's dimensional limits.
Problem: The kernel's maximum work-group size is used to execute it in a
single dimension, without regard for dimensional limitations.
Spec References: OpenCL 2.0 rev 19
Solution: The kernel's maximum work-group size is decreased such that it
meets any dimensional limitations before it's enqueued.
Test Suite Affected: Workgroups
Side Effects: None
Change-Id: I1c642af087f1934723ac7218ca9a35413ff83224
