MAINTAINERS: update Calxeda Highbank maintainer and status

Signed-off-by: NRob Herring <rob.herring@linaro.org>
Message-id: 1400116198-3155-1-git-send-email-robherring2@gmail.com
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

MAINTAINERS

@@ -243,8 +243,8 @@ S: Maintained
 F: hw/*/exynos*
 
 Calxeda Highbank
-M: Mark Langsdorf <mark.langsdorf@calxeda.com>
-S: Supported
+M: Rob Herring <robh@kernel.org>
+S: Maintained
 F: hw/arm/highbank.c
 F: hw/net/xgmac.c