Rename omap_hwmod_init() to omap_hwmod_register().  Rename
omap_hwmod_late_init() to omap_hwmod_setup_all().  Also change all of
the callers to reflect the new names.  While here, update some
copyrights.

Suggested by Tony Lindgren <tony@atomide.com>.

N.B. The comment in mach-omap2/serial.c may no longer be correct, given
     recent changes in init order.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Benoît Cousson <b-cousson@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Tony Lindgren <tony@atomide.com>