meson: add dep_thread to every lib that includes threads.h

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104141
Signed-off-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com>

src/broadcom/meson.build

@@ -39,6 +39,6 @@ if with_gallium_vc5
     c_args : [c_vis_args, no_override_init_args],
     link_whole : [libbroadcom_compiler, libbroadcom_qpu],
     build_by_default : false,
-    dependencies: dep_valgrind,
+    dependencies: [dep_valgrind, dep_thread],
   )
 endif