initscripts: update licence checksum from Yocto 1.6

Signed-off-by: Stefano Babic <sbabic@denx.de>
Drop tinylogin and add website

tinylogin was replaced by busybox since Yocto 1.5,
package is not required anymore.

Add website (swupdate-www) for remote updateing.

Signed-off-by: Stefano Babic <sbabic@denx.de>