Allow generating marking-register check for all GCs

Since we reserve marking register and refresh it for all GCs (with
kReserveMarkingRegister set to true), allow generating marking-register
check as well.

Test: art/test/testrunner/testrunner.py --target (device with
uffd-unsupporting kernel)
Bug: 160737021

Change-Id: Ifd200891da131e2b0c9d4271dea650016450f2cc