Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Remove unused defines. They're distracting...

Convert Freescale PowerPC platforms to FDT convention.

The following systems are affected:

- MPC8555CDS
- MPC8572DS

This overhaul covers the following major changes:

- All integrated peripherals drivers for Freescale MPC85XX SoC, which are
currently in the FreeBSD source tree are reworked and adjusted so they
derive config data out of the device tree blob (instead of hard coded /
tabelarized values).

- This includes: LBC, PCI / PCI-Express, I2C, DS1553, OpenPIC, TSEC, SEC,
QUICC, UART, CFI.

- Thanks to the common FDT infrastrucutre (fdtbus, simplebus) we retire
ocpbus(4) driver, which was based on hard-coded config data.

Note that world for these platforms has to be built WITH_FDT.

Reviewed by: imp
Sponsored by: The FreeBSD Foundation

Make MPC85xx LAW handling and reset routines aware of the MPC8548 variant.

Inspired by discussion with Alexey V Fedorov on freebsd-powerpc@.

Extend and improve MPC85XX Local Bus management.

- Make LBC resources management self-contained: introduce explicit LBC
resources definition (much like the OCP), provide dedicated rman for LB mem
space.

- Full configuration of an LB chip select device: program LAW and BR/OR, map
into KVA, handle all LB attributes (bus width, machine select, ecc,
write protect etc).

- Factor out LAW manipulation routines into shared code, adjust OCP area
accordingly.

- Other LBC fixes and clean-ups.

Obtained from: Semihalf

Improve MPC85XX helper routines.

- Move CCSR accessors to the shared MPC85XX area
- Simplify SVR version subfield handling
- Adjust OCP