Convert Atmel SAM0 flash driver to use device tree to get the flash
controller name and base address.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Where missing add compatible = "soc-nv-flash". Also added a label for
all the soc-nv-flash that we might use in the future.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
The SAM0 has a 64 byte page (the programing unit) with 4 pages to a
row (the erase unit). This driver implements a read/modify/write to
emulate the byte level writes used by NFFS.
Signed-off-by: Michael Hope <mlhx@google.com>
Kumar Gala