configs: spi: Add the SPI_FLASH_BAR for ESPI

Add the SPI_FLASH_BAR for the ESPI controller of FSL, this entry
is missed by
commit 6d825178 ("configs: Don't use SPI_FLASH_BAR as default")

Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>

drivers/spi/Kconfig

@@ -385,6 +385,7 @@ config CF_SPI
 
 config FSL_ESPI
 	bool "Freescale eSPI driver"
+	imply SPI_FLASH_BAR
 	help
 	  Enable the Freescale eSPI driver. This driver can be used to
 	  access the SPI interface and SPI NOR flash on platforms embedding