mmc: MAINTAINERS update for omap_hsmmc

Update Maintainer email for omap_hsmmc, as Venkatraman will no longer
be able to maintain omap_hsmmc driver.
Signed-off-by: Balaji T K <balajitk@ti.com>
Acked-by: Venkatraman S <svenkatr@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

MAINTAINERS

@@ -5498,7 +5498,7 @@ S:	Maintained
 F:	drivers/mmc/host/omap.c
 
 OMAP HS MMC SUPPORT
-M:	Venkatraman S <svenkatr@ti.com>
+M:	Balaji T K <balajitk@ti.com>
 L:	linux-mmc@vger.kernel.org
 L:	linux-omap@vger.kernel.org
 S:	Maintained