freedreno: Add printf pattern string.

Some new flag setting disallows it due to being a security risk.

Fixes: c9c1e261 "mesa: prevent common string formatting security issues"
Reviewed-by: Rob Clark <robdclark@gmail.com>
10 jobs for !1008 with freedreno-fix in 9 minutes and 4 seconds (queued for 3 seconds)
merge request