ARM: mvebu: Fix whitespace in NETGEAR ReadyNAS .dts files

This patch provides some whitespace cleanup for NETGEAR
ReadyNAS Duo v2 and 102 .dts files:

 - Fixed bad spaces
 - Added some space between nodes to improve readability

Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>