Added SPI_FLASH_BAR entry on Kconfig with help description
Signed-off-by: Jagan Teki <jteki@openedev.com>
 
          If unsure, say N
 
+config SPI_FLASH_BAR
+       bool "SPI flash Bank/Extended address register support"
+       depends on SPI_FLASH
+       help
+         Enable the SPI flash Bank/Extended address register support.
+         Bank/Extended address registers are used to access the flash
+         which has size > 16MiB in 3-byte addressing.
+
 config SPI_FLASH_DATAFLASH
        bool "AT45xxx DataFlash support"
        depends on SPI_FLASH && DM_SPI_FLASH