Add ES1373 to machines that were missing it

src/machine/m_at_socket370.c

@@ -105,8 +105,8 @@ machine_at_s1857_init(const machine_t *model)
     spd_register(SPD_TYPE_SDRAM, 0x7, 256);
 
     if (sound_card_current[0] == SOUND_INTERNAL) {
-        device_add(&es1371_onboard_device);
-        device_add(&cs4297_device); /* found on other Tyan boards around the same time */
+        device_add(machine_get_snd_device(machine));
+        device_add(&cs4297_device); /* no good pictures, but the marking looks like CS4297 from a distance */
     }
 
     return ret;