Merge tag 'omap-for-v3.13/cm-scm-cleanup-signed' into omap-for-v3.13/tmp-merge-take2

Via Paul Walmsley <paul@pwsan.com>:

Move some of the OMAP2+ CM and System Control Module direct
register accesses into CM- and System Control
Module-specific "drivers" underneath arch/arm/mach-omap2/.  This
is a prerequisite for moving this code out of arch/arm/mach-omap2/ into
drivers/.

Basic test logs are available here:

http://www.pwsan.com/omap/testlogs/cm_scm_cleanup_a_v3.13/20131019101809/