ukbd: Fix handling of keyboard ErrorRollOver reports

Ignore fantom keyboard state reports entirelly rather than ignore
RollOver states for each key separatelly. Latter results in spurious
release/push pairs of events on each fantom keyboard state report.

Reported by: Jan Martin Mikkelsen <janm_AT_transactionware_DOT_com>
Submitted by: Jan Martin Mikkelsen (initial version)
PR: 253249
MFC after: 1 week