Updated mdev.conf using Alpine Linux config
Obtained mdev.conf from Alpine Linux project from: http://git.alpinelinux.org/cgit/aports.git/plain/main/busybox-initscripts/mdev.conf?h=2.1-stable Modified slightly to fit our environment. Tested quickly on a BeagleBoard-xM.
Used Alpine Linux as base because of mailing list thread: http://lists.busybox.net/pipermail/busybox/2009-November/070889.html