ACodec: Handle HDR10+ metadata at OutputPortSettingsChangedState

[Description]
handle kWhatSetParameters message in OutputPortSettingsChangedState
handle OMX_EventConfigUpdate event in OutputPortSettingsChangedState

In HDR10+ test, we have to associate each HDR10+ metadata to a particular
frame. If receive a kWhatSetParameters message with "hdr10-plus-info"
buffer, it should not be deferred in OutputPortSettingsChangedState and
adopt OMX_SetConfig to associates this config with the next input buffer
sent in OMX_EmptyThisBuffer. The OMX_EventConfigUpdate event report from
component should be handled also in OutputPortSettingsChangedState,
where is to associate updated "hdr10-plus-info" metadata with the next
output buffer sent via FillBufferDone callback.

Bug: 157213958
Bug: 157435393
Change-Id: I27e4614487414063831fa760b9e9ca96b1c3712c
(cherry picked from commit c111aa4f)