Reverting commit 34641.
Function find_mtd_part() is needed by some scripts deployed
for certain targets but not including boot.sh after all.
Still, all this certainly needs some love.
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34642 3c298f89-4303-0410-b956-a3cf2f4a3e73