mtd: spi: sf_probe: Add "jedec, spi-nor" compatible string

mtd: spi: sf_probe: Add "jedec, spi-nor" compatible string

Linux uses "jedec,spi-nor" as compatible string for JEDEC compatible
SPI Flash device nodes. Therefore make U-Boot also to look for the same
compatible string so that we can use Linux DTS files as is.

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