rts: Add regsterCc(s)List to RTS symbols list

Authored by bgamari on Sep 13 2017, 2:51 PM.

Description

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