Merge "KeyMint: clarify EC_CURVE on import" into main am: a2d3f2499c am: 069412e781 am: c7081ed3d8

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2740353

Change-Id: Ibabf0bff5ec4fddce11978c9402990d7f836ee11
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>