linux: Fix device-tree cache info checks
linux: Fix device-tree cache info checks

Ignoring if cache size AND linesize are 0 is useless.
We should ignore if one OR the other is 0.

Actually, we can handle linesize = 0. We just set associativity to 0 as well
(documented as unknown).

This commit was SVN r5068.

shekkbuilder/hwloc,shekkbuilder/hwloc,ggouaillardet/hwloc,ggouaillardet/hwloc,ggouaillardet/hwloc,shekkbuilder/hwloc,ggouaillardet/hwloc,shekkbuilder/hwloc