defconfig: k2l_evm_defconfig: enable SPI driver model

Enable SPI and SPI Flash driver model as K2L SPI controller driver
supports driver model.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Jagan Teki <jteki@openedev.com>

configs/k2l_evm_defconfig

@@ -28,6 +28,8 @@ CONFIG_CMD_FS_GENERIC=y
 CONFIG_OF_CONTROL=y
 CONFIG_DM=y
 CONFIG_TI_AEMIF=y
+CONFIG_DM_SPI=y
+CONFIG_DM_SPI_FLASH=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_STMICRO=y
 CONFIG_DM_ETH=y