Specify KeyMint EC keys by curve not size am: f7932e2752

Original change: https://android-review.googlesource.com/c/platform/system/hardware/interfaces/+/2103384

Change-Id: I957b6fc383250df7ee265e26cef2d15bf7f56f02
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>