add mcf5307 support

The following patches add support for Freescale MCF5307 cpu. Below a brief of the changes:

# On branch master
# Changes to be committed:
# (use "git reset HEAD <file>..." to unstage)
#

#       new file:   arch/m68k/cpu/mcf530x/Makefile
#       new file:   arch/m68k/cpu/mcf530x/config.mk
#       new file:   arch/m68k/cpu/mcf530x/cpu.c
#       new file:   arch/m68k/cpu/mcf530x/cpu.h
#       new file:   arch/m68k/cpu/mcf530x/cpu_init.c
#       new file:   arch/m68k/cpu/mcf530x/interrupts.c
#       new file:   arch/m68k/cpu/mcf530x/speed.c
#       new file:   arch/m68k/cpu/mcf530x/start.S
#       new file:   arch/m68k/include/asm/immap_5307.h
#       new file:   arch/m68k/include/asm/m5307.h

#
# Changed but not updated:
# (use "git add <file>..." to update what will be committed)
# (use "git checkout -- <file>..." to discard changes in working directory)
#

#       modified:   arch/m68k/include/asm/cache.h
#       modified:   arch/m68k/include/asm/immap.h
#       modified:   arch/m68k/include/asm/timer.h
#       modified:   include/common.h

#

Best Regards,

Angelo Dureghello
Sysam

Hi Angelo,

You should get a more concise summary of your patches for free if you use "git format-patch --cover-letter ...", i.e. see
http://www.denx.de/wiki/U-Boot/Patches for details.

Cheers
Detlev

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