Specify KeyMint EC keys by curve not size am: bd3d12a377

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2102924

Change-Id: I06027489aca2b079ce0581cb71d8a43679384401
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>