freedreno: Add valgrind dependency.
Fix a build error.
In file included from ../src/util/u_queue.h:38, from ../src/freedreno/drm/freedreno_ringbuffer.h:33, from ../src/freedreno/ds/fd_pps_driver.h:13, from ../src/freedreno/ds/fd_pps_driver.cc:7: ../src/util/simple_mtx.h:35:12: fatal error: valgrind.h: No such file or directory 35 | # include <valgrind.h> | ^~~~~~~~~~~~
Signed-off-by: Vinson Lee vlee@freedesktop.org