mtd: spinand: Sync GigaDevice GD5F1GQ4UExxG with latest Linux version

mtd: spinand: Sync GigaDevice GD5F1GQ4UExxG with latest Linux version

This patch sync's the U-Boot SPI NAND GigaDevice GD5F1GQ4UExxG support
with the latest Linux version (v5.0-rc3) plus the chip supported posted
on the MTD list. Only the currently in U-Boot available chip is
supported with this sync.

The changes for the GD5F1GQ4UExxG are:
- Name of NAND device changed to better reflect the real part
- OOB layout changed to only reserve 1 byte for BBT
- Use ECC caps 8bits/512bytes instead of 8bits/2048bytes
- Enhanced ecc_get_status() function to determine and report
  a more fine grained bit error status

Signed-off-by: Stefan Roese <[email protected]>
Cc: Boris Brezillon <[email protected]>
Cc: Miquel Raynal <[email protected]>
Acked-by: Jagan Teki <[email protected]>