Rename VMCompilationPerformance to SCHED_SP_COMPUTE

There isn't any reason to keep the VMCompilationPerformance special, so
rename to a more generic, reusable name.

One day we may support whatever-purpose VMs using other generic
profiles.

Bug: 231437770
Test: TH
Change-Id: Id7e78ba4d6ea0dc415ed0bc1f4bdf051f7e7fe05