meta-pia-am335x: update machine config header

Signed-off-by: Björn Krombholz <b.krombholz@pironex.de>
meta-pia-am335x: fix typo in layer name and increase prio

Signed-off-by: Björn Krombholz <b.krombholz@pironex.de>
u-boot: first preview release for piA-AM335x boards

- still includes a lot of debugging info
- works on KM E2 board

Signed-off-by: Björn Krombholz <b.krombholz@pironex.de>
linux-kernel: 3.2 kernel for KM E2

Signed-off-by: Björn Krombholz <b.krombholz@pironex.de>
netbase: override netbase config for KM E2

- just a copy of original recipe for testing

Signed-off-by: Björn Krombholz <b.krombholz@pironex.de>