ramips:support Lenovo AC1200 Wireless router

Lenovo AC1200 series has two types, Y1 and Y1S.
Y1S has 256MB DDR2, Y1 only has 128MB and Y1 have no Giga Port.

Signed-off-by: Lintel <lintel.huang@gmail.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@41961 3c298f89-4303-0410-b956-a3cf2f4a3e73
firmware-utils: made mkdir615h1 work for all Senao-produced devices as mksenaofw and cleaned up some of its formatting

Signed-off-by: Forest Crossman <cyrozap@gmail.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@41962 3c298f89-4303-0410-b956-a3cf2f4a3e73