Add support for P-384 CoseKeys

RKP allows P-384 to be used in the DICE chain and for signing CSRs. Add
support for this algorithm so that the VTS tests will pass on devices
that use P-384.

Bug: 261647022
Test: atest VtsHalRemotelyProvisionedComponentTargetTest
Change-Id: I2fb6f1ef1a111d7c6ee057217dcc1c4d36391a78
2 files changed