MPC512x: add more hardware description to immap_512x.h

- add GPIO module description
- add Address Latch Timing Register description
- add IO Control Memory Map
- add FEC Memory Map

Also change board/freescale/mpc5121ads/mpc5121ads.c and
cpu/mpc512x/iopin.c as needed.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: John Rigby <jcrigby@gmail.com>
3 files changed