Fix equals and hashCode APIs on TvTrackInfo

Current hashCode API cares only for mId and it returns same values
even if other member variables are different.
To avoid for returning same values between different TvTrackInfo of
each program, hashCode API should care all variables used on
equals API. Note that mId is defined as unique only in the same
program.

Test: build
Change-Id: I4d72f6ce80141d92f86e548804e1f0257ed6fcfb