MFC r315490, r315508:

Make the imx5 clocks driver work with vendor-supplied dts (which does not
supply the addresses for the DPLL register blocks) by hard-coding the
addresses in the driver source code. Yes, this is just as bad an idea as
it sounds, but we have no choice.

Remove hardcoded bootverbose=1; imx53 systems boot using loader(8) and
users can set verbose if they want to.