SHEEVAPLUG cache options

[Martin Husemann <martin%duskware.de@localhost>]

Hey folks,

what is the state of L2 cache support for SHEEVAPLUG/Kirkwood?

The config file refer to MV_L2_CACHE_ENABLE/MV_L2_CACHE_WRITE_THROUGH
and MV_CACHE_RANGE_OPS, but the code tests for SHEEVA_L2_CACHE and
SHEEVA_L2_CACHE_WT - and the commit mentions the latter being untested.

I'd love to have it working in netbsd-7 ;-)

Martin