MAINTAINERS: Add myself as sgtl5000 maintainer

I would like helping maintaining and reviewing/testing sgtl5000
related patches.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

MAINTAINERS

@@ -9921,6 +9921,13 @@ F:	Documentation/ABI/stable/sysfs-bus-nvmem
 F:	include/linux/nvmem-consumer.h
 F:	include/linux/nvmem-provider.h
 
+NXP SGTL5000 DRIVER
+M:	Fabio Estevam <fabio.estevam@nxp.com>
+L:	alsa-devel@alsa-project.org (moderated for non-subscribers)
+S:	Maintained
+F:	Documentation/devicetree/bindings/sound/sgtl5000.txt
+F:	sound/soc/codecs/sgtl5000*
+
 NXP TDA998X DRM DRIVER
 M:	Russell King <linux@armlinux.org.uk>
 S:	Supported