rts: Add regsterCc(s)List to RTS symbols list
These are helpers added in a8da0de27e600211f04601ac737c329d6603c700 to
register cost centres. They are invoked while loading profiled code and
therefore need to be in the RTS's symbol list.
Test Plan: Validate, trying starting GHCi in profiled GHC build
Reviewers: austin, erikd, simonmar
Subscribers: rwbarton, thomie, RyanGlScott
Differential Revision: https://phabricator.haskell.org/D3950