[Buildroot] [PATCH 0/2] introducing udev 177

[yegorslists at googlemail.com]

This patch series introduces udev 177. A lot of things has been changed since 173:

- udev rules generator was deisabled by default
- udev doesn't create any /dev/ devices any more and relies on devtmpfs
- kmod was introduced to manage kernel modules
- /run directory
- etc.

Changes:
v2: fix dependencies and make verbose commit message (Arnout Vandecappelle)