mtd: spi: spi-nor-core: Add 4 Byte addressing support

mtd: spi: spi-nor-core: Add 4 Byte addressing support

Sync changes from Linux SPI NOR framework to add 4 byte addressing
support. This is required in order to support flashes like MT35x
that no longer support legacy Bank Address Register(BAR) way of accessing
>16MB region.

Signed-off-by: Vignesh R <[email protected]>
Tested-by: Simon Goldschmidt <[email protected]>
Tested-by: Stefan Roese <[email protected]>
Tested-by: Horatiu Vultur <[email protected]>
Reviewed-by: Jagan Teki <[email protected]>
Tested-by: Jagan Teki <[email protected]> #zynq-microzed