fb_bench: disable autopilot run on linux

repos/os/run/fb_bench.run

@@ -7,6 +7,11 @@ if {[have_spec odroid_xu] || [have_spec wand_quad] || [have_spec zynq] || [have_
 	exit 0
 }
 
+if {[get_cmd_switch --autopilot] && [have_spec linux]} {
+	puts "\nAutopilot run is not supported on this platform\n"
+	exit 0
+}
+
 set build_components { core init test/fb_bench drivers/framebuffer drivers/timer }
 
 source ${genode_dir}/repos/base/run/platform_drv.inc