drm/msm: Fix error about comments within a comment block

My compiler yells:
  .../drivers/gpu/drm/msm/adreno/adreno_gpu.c:69:27:
  error: '/*' within block comment [-Werror,-Wcomment]

Let's fix.

Fixes: 6a0dea02 ("drm/msm: support firmware-name for zap fw (v2)")
Link: https://patchwork.freedesktop.org/patch/348519/


Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>