drm/radeon/si: fix define for MC_SEQ_TRAIN_WAKEUP_CNTL

Typo in the register offset.

Noticed-by: Sylvain BERTRAND <sylware@legeek.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
1 file changed