radeonsi: pass -O halt_waves to umr for hang debugging

This will give us meaningful wave information in the case of a hang where
shaders are still running in an infinite loop.

Note that we call umr multiple times for different sections of the ddebug
hang dump, and so the wave information will not necessarily match up
between sections.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>

src/amd/common/ac_debug.c

@@ -761,7 +761,7 @@ unsigned ac_get_wave_info(struct ac_wave_info waves[AC_MAX_WAVES_PER_CHIP])
 	char line[2000];
 	unsigned num_waves = 0;
 
-	FILE *p = popen("umr -wa", "r");
+	FILE *p = popen("umr -O halt_waves -wa", "r");
 	if (!p)
 		return 0;
 

src/gallium/drivers/radeonsi/si_debug.c

@@ -1051,8 +1051,8 @@ static void si_dump_debug_state(struct pipe_context *ctx, FILE *f,
 		si_dump_debug_registers(sctx, f);
 
 		si_dump_annotated_shaders(sctx, f);
-		si_dump_command("Active waves (raw data)", "umr -wa | column -t", f);
-		si_dump_command("Wave information", "umr -O bits -wa", f);
+		si_dump_command("Active waves (raw data)", "umr -O halt_waves -wa | column -t", f);
+		si_dump_command("Wave information", "umr -O halt_waves,bits -wa", f);
 	}
 }