haven: hh_rm_core: Correct copyright year marking

Retain the old copyright year which was dropped during propagation of
a recent change.

Fixes: dd473e6c ("haven: hh_rm_core: Change datatype of
num_fragments").

Change-Id: If8d66b096403ae1c54c072ef86a1bfbda828f50f
Signed-off-by: Guru Das Srinagesh <gurus@codeaurora.org>