RSE: Drivers: Add doxy comments to tram driver

Keep a uniform style and improves in-code documentation using
Doxygen style comments for the TRAM driver APIs

Signed-off-by: Antonio de Angelis <antonio.deangelis@arm.com>
Change-Id: I4392d6708f4d874f03b8860e23195f6174b6ada2
1 file changed