meta-witherspoon: Use phosphor-power recipe

phosphor-power recipe is added in meta-phosphor, replace
witherspoon-pfault-analysis with phosphor-power.

Add "psuDevices" in psu.json for witherspoon and swift.

Tested: Verify witherspoon build is OK, the phosphor-power related
        binaries and the services are installed correctly.

Change-Id: I561dc421167cbd2018df8a86c046545c7c86fa0a
Signed-off-by: Lei YU <mine260309@gmail.com>
15 files changed