[U-Boot] Update and Cut down mach types

[Wolfgang Denk]

Dear Michael Schwingen,

In message <4DB70B98.6040208 at discworld.dascon.de> you wrote:
>
> Nevertheless, we need a method so that we no not need to patch the
> mach-types.h after every cacle where the Linux version is pulled in.

Detlev Zundel suggested we might maintain a U-Boot local file
"obsoleted-mach-types.h" which would contain just the MACH_ID
definitions that 1) are being actively used in U-Boot and 2) have been
removed from the official "mach-types.h" file.  This way we just need
to add a "#include <obsoleted-mach-types.h>" to "mach-types.h" to
maintain compatibility with the existing code, and we make it very
obvious that these are somewhat special MACH_IDs.


Comments?

Best regards,

Wolfgang Denk

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