freedreno: Add missing break statement.

Reported-by: Coverity Scan
Fixes: 5a6beb6a24aa ("freedreno: add adreno 650")
Signed-off-by: Vinson Lee <vlee@freedesktop.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5169>
1 file changed