[U-Boot] mx6: consolidating and extending anadig/analog/anatop register defs

[Wolfgang Grandegger]

Hello,

for the USB support on MX6Q, I'm trying to consolidate and extend the
register definitions for the ANADIG registers. Unfortunately, three
different names are used for the same registers: ANADIG, analog and
ANATOP. Any idea what the names do stand for and what would be the most
appropriate one. Apart from that, we should have a separate structure
and header file for these registers. Currently, they are added to the
CCM regs.

Wolfgang.