Updating the spi-qpic-snand driver with the latest patches sent
upstream and remove custom patches.
These patches add error handling fixes, use of right read location in
read ops, removal of unused variable, ability to read user config and
nand chip requirements, and support for 8bits ECC strength.
Tested on: Gl.iNet GL-B3000 & Linksys MR5500, MX2000, MX5500, SPNMX56
Signed-off-by: George Moussalem <george.moussalem@outlook.com>
Signed-off-by: Robert Marko <robimarko@gmail.com>
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