[oe] Changing kernel for Angstrom @ beagleboard.

[Tasslehoff Kjappfot]

I run Angstrom 2010.8 with a 2.6.39 kernel. To get better power
management I want to use the 2.6.39 pm-branch from sakoman.

I've created a recipe called linux-sakoman-pm_2.6.39.bb and tried
setting some preferred providers.

PREFERRED_PROVIDER_virtual/kernel_beagleboard = "linux-sakoman-pm"
PREFERRED_PROVIDER_virtual/kernel = "linux-sakoman-pm"

I also set DEFAULT_PREFERENCE = "-1" in linux-omap_2.6.39.bb.

This made it compile linux-sakoman-pm_2.6.39.bb when I bitbake my
rootfs, but packaged in /boot in my rootfs is still the old kernel.

What's missing?

- Tasslehoff