keymaster: add flags indicating feature support

For wrapping the disk encryption secret, we add a flag that indicates it
can be done without having to start some storage daemon which the
trusted OS will query to get data needed to load up the keys. This
usually means that the "key blob" we store is actually just the RSA key
encrypted with the device's KEK and not a reference to an encrypted
filesystem stored on /data

Also to allow other providers to upgrade to V3 of the header, we add
flags to show whether the keymaster supports different key types. This
allows keymaster HALs to support the whole device encryption secret
wrapping without needing to implement DSA and EC key handling. The V2
header made support implicit.

Change-Id: Ic5b13e2e84dd91e7a4ae443048ecc16cc805cb97
Merge "keymaster: add flags indicating feature support"
audio: allow compiling for 64-bit

Set -Wno-unused-parameter, which makes the directory warnings-clean
on 32-bit and 64-bit.
Remove LOCAL_32_BIT_ONLY.

Change-Id: If0c0135e57935d785a0f36b7d5187ac567c7e21c
audio_remote_submix: allow compiling for 64-bit

Fix a few 64-bit warnings and set -Wno-unused-parameter, which makes
the directory warnings-clean on 32-bit and 64-bit.
Remove LOCAL_32_BIT_ONLY.

Change-Id: I6a2183b5bb0cdf438a04de967995da7b1e2e3854
usbaudio: allow compiling for 64-bit

Set -Wno-unused-parameter, which makes the directory warnings-clean
on 32-bit and 64-bit.
Remove LOCAL_32_BIT_ONLY.

Change-Id: I672d4ee8d9e70c75f9376ca60389af08f73166b8
Merge changes I672d4ee8,I6a2183b5,If0c0135e

* changes:
  usbaudio: allow compiling for 64-bit
  audio_remote_submix: allow compiling for 64-bit
  audio: allow compiling for 64-bit
auto-merger: merge in from aosp/master