Add timestamp and read status extra constants to MAP Client

Bug: b/132455654
Test: build and run on automotive hardware. Use kitchen sink to send
and receive messages.

Change-Id: Ic0f04640f1894d6cf336ba7e641df9cf148a2bbd
Merged-In: Ic0f04640f1894d6cf336ba7e641df9cf148a2bbd
1 file changed