sf: kconfig: add kconfig options for spi flashes

Add kconfig options for various SPI flashes and use them in cm-fx6 defconfig.

Cc: Jagan Teki <jteki@openedev.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>

drivers/mtd/spi/Kconfig

@@ -42,6 +42,50 @@ config SPI_FLASH_BAR
 	  Bank/Extended address registers are used to access the flash
 	  which has size > 16MiB in 3-byte addressing.
 
+if SPI_FLASH
+
+config SPI_FLASH_ATMEL
+	bool "Atmel SPI flash support"
+	help
+	  Add support for various Atmel SPI flash chips (AT45xxx and AT25xxx)
+
+config SPI_FLASH_EON
+	bool "EON SPI flash support"
+	help
+	  Add support for various EON SPI flash chips (EN25xxx)
+
+config SPI_FLASH_GIGADEVICE
+	bool "GigaDevice SPI flash support"
+	help
+	  Add support for various GigaDevice SPI flash chips (GD25xxx)
+
+config SPI_FLASH_MACRONIX
+	bool "Macronix SPI flash support"
+	help
+	  Add support for various Macronix SPI flash chips (MX25Lxxx)
+
+config SPI_FLASH_SPANSION
+	bool "Spansion SPI flash support"
+	help
+	  Add support for various Spansion SPI flash chips (S25FLxxx)
+
+config SPI_FLASH_STMICRO
+	bool "STMicro SPI flash support"
+	help
+	  Add support for various STMicro SPI flash chips (M25Pxxx and N25Qxxx)
+
+config SPI_FLASH_SST
+	bool "SST SPI flash support"
+	help
+	  Add support for various SST SPI flash chips (SST25xxx)
+
+config SPI_FLASH_WINBOND
+	bool "Winbond SPI flash support"
+	help
+	  Add support for various Winbond SPI flash chips (W25xxx)
+
+endif
+
 config SPI_FLASH_DATAFLASH
 	bool "AT45xxx DataFlash support"
 	depends on SPI_FLASH && DM_SPI_FLASH