MAINTAINERS: Add SDCA maintainers entry

Add a maintainers entry for the new SDCA support code.

Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.dev>
Link: https://patch.msgid.link/20250624122844.2761627-2-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: charleskeepax

MAINTAINERS

@@ -22298,6 +22298,17 @@ M:	Jim Cromie <jim.cromie@gmail.com>
 S:	Maintained
 F:	drivers/clocksource/scx200_hrt.c
 
+SDCA LIBRARY AND CLASS DRIVER
+M:	Charles Keepax <ckeepax@opensource.cirrus.com>
+M:	Maciej Strozek <mstrozek@opensource.cirrus.com>
+R:	Bard Liao <yung-chuan.liao@linux.intel.com>
+R:	Pierre-Louis Bossart <pierre-louis.bossart@linux.dev>
+L:	linux-sound@vger.kernel.org
+L:	patches@opensource.cirrus.com
+S:	Maintained
+F:	include/sound/sdca*
+F:	sound/soc/sdca/*
+
 SDRICOH_CS MMC/SD HOST CONTROLLER INTERFACE DRIVER
 M:	Sascha Sommer <saschasommer@freenet.de>
 L:	sdricohcs-devel@lists.sourceforge.net (subscribers-only)