Change MMCME2 advanced COMPENSATION parameter to have a default of INTERNAL.
Change MMCME2 advanced COMPENSATION parameter to have a default of INTERNAL.

Signed-off-by: Brent Nelson <d915f4e970e53654202c1cf5c62e60a7280a8219@ee.byu.edu>

SymbiFlow/symbiflow-arch-defs,SymbiFlow/symbiflow-arch-defs