mtd: spinand: winbond: Sort the devices

Use alphabetical order, not because it's pretty, but because it makes
sense. This way the devices are listed by density, and then by hardware
feature set. Add comments to make the list more understandable.

There is no intended functional change.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Link: https://lore.kernel.org/linux-mtd/20241009125002.191109-5-miquel.raynal@bootlin.com