m68k: coldfire: create internal register access defines

The readx/writex family of IO access functions for ColdFire are
non-standard. They return native endian data for multi-byte access,
which on m68k/ColdFire is big-endian byte order. A number of places
need fixing to change readx/writex to be more standard - a lot of
the CPU/SoC architecture specific code and a number of drivers.

The existing ColdFire CPU/SoC architecture code is inconsistent in
how it accesses SoC hardware module registers. Both readx/writex
and __raw_readx/__raw_writex are used across the code base. To clean
this up this set of patches moves to an internal set of access
defines for the CPU/SoC architecture code. The following are defined
and used for all internal register access:

    8 bit read  -->  mcf_read8
    8 bit write -->  mcf_write8
   16 bit read  -->  mcf_read16
   16 bit write -->  mcf_write16
   32 bit read  -->  mcf_read32
   32 bit write -->  mcf_write32

To ease review I have broken the changes up a little, grouping major
blocks together instead of one huge patch.

Signed-off-by: Greg Ungerer <[email protected]>
---
 arch/m68k/coldfire/clk.c        |    8 +-
 arch/m68k/coldfire/device.c     |    8 +-
 arch/m68k/coldfire/dma_timer.c  |   12 +--
 arch/m68k/coldfire/intc-2.c     |   30 ++++-----
 arch/m68k/coldfire/intc-5249.c  |   10 +--
 arch/m68k/coldfire/intc-525x.c  |   12 +--
 arch/m68k/coldfire/intc-5272.c  |   20 +++---
 arch/m68k/coldfire/intc-simr.c  |   38 ++++++------
 arch/m68k/coldfire/intc.c       |   28 ++++-----
 arch/m68k/coldfire/m5206.c      |    2
 arch/m68k/coldfire/m520x.c      |   26 ++++----
 arch/m68k/coldfire/m523x.c      |   12 +--
 arch/m68k/coldfire/m5249.c      |   16 ++---
 arch/m68k/coldfire/m525x.c      |   12 +--
 arch/m68k/coldfire/m5272.c      |   16 ++---
 arch/m68k/coldfire/m527x.c      |   40 ++++++-------
 arch/m68k/coldfire/m528x.c      |   28 ++++-----
 arch/m68k/coldfire/m5307.c      |    2
 arch/m68k/coldfire/m53xx.c      |  122 ++++++++++++++++++++--------------------
 arch/m68k/coldfire/m5407.c      |    2
 arch/m68k/coldfire/m5441x.c     |   12 +--
 arch/m68k/coldfire/m54xx.c      |   18 ++---
 arch/m68k/coldfire/nettel.c     |   16 ++---
 arch/m68k/coldfire/pci.c        |   56 +++++++++---------
 arch/m68k/coldfire/pit.c        |   20 +++---
 arch/m68k/coldfire/reset.c      |    4 -
 arch/m68k/coldfire/sltimers.c   |   18 ++---
 arch/m68k/coldfire/stmark2.c    |   12 +--
 arch/m68k/coldfire/timers.c     |   38 ++++++------
 arch/m68k/include/asm/io_no.h   |   16 +++++
 arch/m68k/include/asm/mcfgpio.h |   12 +--
 arch/m68k/include/asm/nettel.h  |    4 -