ASoC: Add headers to match patterns in MAINTAINERS

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index ef03abe..3cf4f0d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5277,6 +5277,7 @@
 W:	http://alsa-project.org/main/index.php/ASoC
 S:	Supported
 F:	sound/soc/
+F:	include/sound/soc*
 
 SPARC + UltraSPARC (sparc/sparc64)
 P:	David S. Miller