MAINTAINERS: ONENAND: MTD: Mark Samsung's OneNAND as orphaned

Since I leave Samsung by the end of the year, I will not have access to
OneNAND devices anymore.

Hence the custodian position has been marked as "Orphaned".

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 41dd01a..53603d1 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -392,8 +392,8 @@
 F:	arch/nios2/
 
 ONENAND
-M:	Lukasz Majewski <l.majewski@samsung.com>
-S:	Maintained
+#M:	Lukasz Majewski <l.majewski@majess.pl>
+S:	Orphaned (Since 2017-01)
 T:	git git://git.denx.de/u-boot-onenand.git
 F:	drivers/mtd/onenand/