[oe] [RFC] Enable tune-thumb.inc for all armv5t and armv6t machines

[Koen Kooi]

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Hi,

Today I seperated the thumb bits from conf/machine/include/ipx4xx.conf into
conf/machine/include/. I'd like to enable for all >=v5t machines, but I'm unsure about
using positive or negative logic.

* positive logic: might break for (soft)fpa distros that don't disable it, no problem for
EABI distros
* negative logic: no difference to status quo, but having negative logic in tune-* files
feels a bit wrong.

If you need numbers: http://ewi546.ewi.utwente.nl/tmp/thumb/comparison.txt (package:
<thumb size> <regular size> (<unit>))

what do you all think?

regards,

Koen

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