mtd: spi-nor-core: Replace MTD_SPI_NOR_USE_4K_SECTORS with SPI_FLASH_USE_4K_SECTORS

U-Boot uses CONFIG_SPI_FLASH_USE_4K_SECTORS to enable 4K small sector
support. Use that instead of MTD_SPI_NOR_USE_4K_SECTORS.

Reported-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
diff --git a/drivers/mtd/spi/spi-nor-ids.c b/drivers/mtd/spi/spi-nor-ids.c
index 04db986..164a22d 100644
--- a/drivers/mtd/spi/spi-nor-ids.c
+++ b/drivers/mtd/spi/spi-nor-ids.c
@@ -58,7 +58,7 @@
  * All newly added entries should describe *hardware* and should use SECT_4K
  * (or SECT_4K_PMC) if hardware supports erasing 4 KiB sectors. For usage
  * scenarios excluding small sectors there is config option that can be
- * disabled: CONFIG_MTD_SPI_NOR_USE_4K_SECTORS.
+ * disabled: CONFIG_SPI_FLASH_USE_4K_SECTORS.
  * For historical (and compatibility) reasons (before we got above config) some
  * old entries may be missing 4K flag.
  */