ramips: fix indentation, case statements structure and optimize base-files/etc/board.d/02_network

The following patch:
 * fixes wrong indentation
 * combines together boards with same configuration
 * removes unnecessary spaces
 * removes empty lines after ";;" and uses only "|\" (for consistency)
 * orders boards alphabetically

in base-files/etc/board.d/02_network script.

One bug was left untouched: freestation5 board is listed twice in case statement, in ramips_setup_macs().

Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>

SVN-Revision: 46634