configs: Replace deprecated Micrel defines with PHY_MICREL_KSZ90X1

These boards will now use the ksz90x1 driver instead of the mess in
ksz8xxx. This change is needed before the two drivers can be fully
separated.

Signed-off-by: Alexandru Gagniuc <alex.g@adaptrum.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
28 files changed