eap: fix config realm matching am: 1651ba620e

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/wpa_supplicant_8/+/19802314

Change-Id: Ib34e9d00c9eb43afa296e4cda942c6b94b320aaa
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>