powerpc/t4240qds: Fix SPI flash type

T4240QDS uses a SST instead of SPANSION SPI flash.

Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>

include/configs/t4qds.h

@@ -504,7 +504,7 @@ unsigned long get_board_ddr_clk(void);
  */
 #define CONFIG_FSL_ESPI
 #define CONFIG_SPI_FLASH
-#define CONFIG_SPI_FLASH_SPANSION
+#define CONFIG_SPI_FLASH_SST
 #define CONFIG_CMD_SF
 #define CONFIG_SF_DEFAULT_SPEED         10000000
 #define CONFIG_SF_DEFAULT_MODE          0