add new s2w/dt2w sysfs entries to init.spade.rc

Change-Id: Ic29b5fb9ee850737c0a4a54baee9561cd7a51bac
Revert "BoardConfig: increase bootimg partition size to 4594304"

This reverts commit f582ccc03fa3d56d693a566d134736beee7bdcf7.