ARM: Mark AE boards orphan

I no longer have any of these boards, mark boards orphan.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Tom Rini <trini@konsulko.com>

board/aries/m28evk/MAINTAINERS

 M28EVK BOARD
-M:	Marek Vasut <marek.vasut@gmail.com>
-S:	Maintained
+#M:	Marek Vasut <marek.vasut@gmail.com>
+S:	Orphan (since 2017-07)
 F:	board/aries/m28evk/
 F:	include/configs/m28evk.h
 F:	configs/m28evk_defconfig

board/aries/m53evk/MAINTAINERS

 M53EVK BOARD
-M:	Marek Vasut <marek.vasut@gmail.com>
-S:	Maintained
+#M:	Marek Vasut <marek.vasut@gmail.com>
+S:	Orphan (since 2017-07)
 F:	board/aries/m53evk/
 F:	include/configs/m53evk.h
 F:	configs/m53evk_defconfig

board/aries/ma5d4evk/MAINTAINERS

 Aries MA5D4EVK BOARD
-M:	Marek Vasut <marek.vasut@gmail.com>
-S:	Maintained
+#M:	Marek Vasut <marek.vasut@gmail.com>
+S:	Orphan (since 2017-07)
 F:	board/aries/ma5d4evk/
 F:	include/configs/ma5d4evk.h
 F:	configs/ma5d4evk_defconfig

board/aries/mcvevk/MAINTAINERS

 Aries MCVEVK BOARD
-M:	Marek Vasut <marek.vasut@gmail.com>
-S:	Maintained
+#M:	Marek Vasut <marek.vasut@gmail.com>
+S:	Orphan (since 2017-07)
 F:	include/configs/socfpga_mcvevk.h
 F:	configs/socfpga_mcvevk_defconfig