Ed25519: Indicate Android Keystore supports it

Cherry-Pick Note: Keystore Ed25519 support apparently back-ported to S QPR3, so ART and Conscrypt MTS may or may not see it depending on base OS version (second cherry-pick in this chain will make it optional).

Indicate Android Keystore supports Ed25519, to fix libcore.java.security.ProviderTest.

Bug: 233703641
Bug: 232369345
Test: atest libcore.java.security.ProviderTest#test_Provider_getServices
Ignore-AOSP-First: Fixing a failure on tm-dev, which no longer merges from aosp-master
Change-Id: I5bf85529f75f63113c86437ee21dc1927036099f
Merged-In: I5bf85529f75f63113c86437ee21dc1927036099f
(cherry picked from commit c6ec3dfa738d959bf60d5ce6d8a5470c44474124)
1 file changed