oe: pia-am335x: update kernel patch

Signed-off-by: Björn Krombholz <b.krombholz@pironex.de>
oe: pia335x: kernel: update to current develeopment version for MMI

Signed-off-by: Björn Krombholz <b.krombholz@pironex.de>
oe: pia335x: uboot: update version for E2

Signed-off-by: Björn Krombholz <b.krombholz@pironex.de>
oe: pia335x: update machine config

Signed-off-by: Björn Krombholz <b.krombholz@pironex.de>
oe: add test images for pia-am335x

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