mtd: nand: mxs: reset BCH earlier, too, to avoid NAND startup problems ...

It could happen (1 out of 100 times) that NAND did not start up
correctly after warm rebooting, so barebox could not find its
environment or DMA timed out due to a stalled BCH. When resetting BCH
together with GPMI, the issue could not be observed anymore. We probably
need the consistent state already before sending commands to NAND.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/mxs'

mtd: nand: mxs: check for errors when resetting ip core ...

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: add parent support ...

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

switch all platform_bus device/driver registering to platform_driver/device_register ...

now register_driver and register_device are for bus only usage.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

mtd nand: add mxs-nand driver ...

Based on the U-Boot version. Changed to kernel style register layout, added
MX23 support (WIP!), made MMU aware and adapted to barebox.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>