[zircon_bechmark] add VmoReadOrWriteMapTest VmoReadOrWriteMapRangeTest

Allow comparison with vmo/read/write test to see performance for various
sizes. VmoReadOrWriteMapRangeTest adds the flag ZX_VM_MAP_RANGE, which
prevents demand paging each accessed page.

Test: zircon_benchmarks -p --filter "VmoMap|Vmo/[RW]

Change-Id: I38224d617a186cc7389431a7f61ce5462c977372
1 file changed