Set needed bootargs for android in mmc, emmc and nand boot.

Signed-off-by: Matthias Rabe <matthias.rabe@sigma-chemnitz.de>
Signed-off-by: Christian Hemp <c.hemp@phytec.de>

We store kernel and oftree in static UBI volumes now. No need
for separate partitions any more.

Signed-off-by: Christian Hemp <christian.hemp@gmail.com>
Acked-by: Stefan Lengfeld <s.lengfeld@phytec.de>

Rename sd-ext3 to mmc, remove filesystem type from bootargs and remove
bootargs-ip. Add init script 'bootsource' to set boot source priority
and bootscript 'spi' for SPI NOR.

Signed-off-by: Christian Hemp <c.hemp@phytec.de>
Signed-off-by: Stefan Christ <s.christ@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

The main idea behind this patch is to avoid redundant code.  Because of
the module similarities of all i.MX6 based phytec boards, we can merge
its code.

The phytec-som-imx6 merges the code of all i.MX6 based phytec SOMs.  So
we will have only one "board" in the barebox for phyCARD-i.MX6 and
phyFLEX-i.MX6.

Signed-off-by: Stefan Christ <s.christ@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>