broadcom/compiler: check signal writes to magic regs when updating scoreboard

We have only been checking magic writes from ADD and MUL ports, but signals
can potentially write to magic registers too.

Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18667>

src/broadcom/compiler/qpu_schedule.c

@@ -1326,6 +1326,12 @@ update_scoreboard_for_chosen(struct choose_scoreboard *scoreboard,
                 }
         }
 
+        if (v3d_qpu_sig_writes_address(devinfo, &inst->sig) && inst->sig_magic) {
+                update_scoreboard_for_magic_waddr(scoreboard,
+                                                  inst->sig_addr,
+                                                  devinfo);
+        }
+
         if (inst->sig.ldvary)
                 scoreboard->last_ldvary_tick = scoreboard->tick;
 }