Route ECDH key import requests to Soft-KeyMint.

Since KeyMaster doesn't support ECDH, route all key ECDH key import
requests to Soft-KeyMint.

Bug: 216434270
Test: atest
CtsKeystoreWycheproofTestCases:com.google.security.wycheproof.JsonEcdhTest;
atest CtsKeystoreTestCases:android.keystore.cts.KeyAgreementTest#testGenerateSecret_withImportedKey

Change-Id: Ia4da2b319e2fc2b4fc6cceab7c3b66c6713dc3a0
1 file changed