[ALSA] add MODULE_FIRMWARE entries

Add MODULE_FIRMWARE() entries, where appropriate.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/sound/isa/wavefront/wavefront_fx.c b/sound/isa/wavefront/wavefront_fx.c
index 0e948a9..fc95a87 100644
--- a/sound/isa/wavefront/wavefront_fx.c
+++ b/sound/isa/wavefront/wavefront_fx.c
@@ -298,3 +298,7 @@
 #endif
 	return err;
 }
+
+#ifndef CONFIG_SND_WAVEFRONT_FIRMWARE_IN_KERNEL
+MODULE_FIRMWARE("yamaha/yss225_registers.bin");
+#endif