MAINTAINERS/mailmap: Update my email address

Update my email address to the NXP account.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
diff --git a/board/freescale/mx25pdk/MAINTAINERS b/board/freescale/mx25pdk/MAINTAINERS
index 6322176..fa4651e 100644
--- a/board/freescale/mx25pdk/MAINTAINERS
+++ b/board/freescale/mx25pdk/MAINTAINERS
@@ -1,5 +1,5 @@
 MX25PDK BOARD
-M:	Fabio Estevam <fabio.estevam@freescale.com>
+M:	Fabio Estevam <fabio.estevam@nxp.com>
 S:	Maintained
 F:	board/freescale/mx25pdk/
 F:	include/configs/mx25pdk.h