Ignore unknown EAP failure reasons pre-T

There was a behavior change in Eap failure notifier implemented in
Android T that's unintended to affect Android S devices. This CL fixes
that problem.

Bug: 260106763
Test: atest com.android.server.wifi
Change-Id: Ifec2f175c7d119e68ed1b9ba06d8cea3f6a69806
Merged-In: Ifec2f175c7d119e68ed1b9ba06d8cea3f6a69806
(cherry picked from commit 31926f0827a6b7939d8f3cbc0c50b7938a7f7ca2)
2 files changed