board/freescale: Update MAINTAINERS files

Update maintainers for secure boot targets.

Signed-off-by: York Sun <york.sun@nxp.com>
diff --git a/board/freescale/t1040qds/MAINTAINERS b/board/freescale/t1040qds/MAINTAINERS
index 640538f..fb3565a 100644
--- a/board/freescale/t1040qds/MAINTAINERS
+++ b/board/freescale/t1040qds/MAINTAINERS
@@ -7,6 +7,6 @@
 F:	configs/T1040QDS_DDR4_defconfig
 
 T1040QDS_SECURE_BOOT BOARD
-M:	Aneesh Bansal <aneesh.bansal@freescale.com>
+M:	Ruchika Gupta <ruchika.gupta@nxp.com>
 S:	Maintained
 F:	configs/T1040QDS_SECURE_BOOT_defconfig