Enable Windows host compilation of keymaster am: 3997dc0ff8

Original change: https://android-review.googlesource.com/c/platform/system/keymaster/+/2413478

Change-Id: I89902757749f653c3e330dcc31cf230dc1802593
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>