NdkMediaCodec: mark new APIs as introduced in 26

The following APIs are introduced in API 26:
AMediaCodec_createInputSurface
AMediaCodec_createPersistentInputSurface
AMediaCodec_setInputSurface
AMediaCodec_setParameters
AMediaCodec_signalEndOfInputStream

Bug: 32746065
Change-Id: I4899bbee8125974a06af1db8eb7c5b0382335e70
1 file changed