OMAP: clockdomain code/data: remove omap_chip bitmask from struct clockdomain

At Tony's request, remove the omap_chip bitmasks from the clockdomain
and clockdomain dependency definitions.  Instead, initialize
clockdomains based on one or more lists that are applicable to a
particular SoC family, variant, and silicon revision.

Tony Lindgren <tony@atomide.com> found a bug in a previous version of this
patch - thanks Tony.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Tony Lindgren <tony@atomide.com>