dmaengine: mediatek: update MAINTAINERS entry with MediaTek DMA driver

I work for MediaTek and maintain SoC targeting to home gateway and
also will keep extending and testing the function.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

MAINTAINERS

@@ -8785,6 +8785,15 @@ M:	Sean Wang <sean.wang@mediatek.com>
 S:	Maintained
 F:	drivers/media/rc/mtk-cir.c
 
+MEDIATEK DMA DRIVER
+M:	Sean Wang <sean.wang@mediatek.com>
+L:	dmaengine@vger.kernel.org
+L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
+L:	linux-mediatek@lists.infradead.org (moderated for non-subscribers)
+S:	Maintained
+F:	Documentation/devicetree/bindings/dma/mtk-*
+F:	drivers/dma/mediatek/
+
 MEDIATEK PMIC LED DRIVER
 M:	Sean Wang <sean.wang@mediatek.com>
 S:	Maintained