[PATCH -resend 1/1] SPI: disable CONFIG_SPI_FSL_ESPI=m build

When spi_fsl_espi is chosen to be built as a module, there is a build
error because we test only CONFIG_SPI_FSL_ESPI in declaration of
struct mpc8xxx_spi in drivers/spi/spi_fsl_lib.h. Also some called
functions are not exported.

So we forbid CONFIG_SPI_FSL_ESPI to be tristate here.

The error looks like:
drivers/spi/spi_fsl_espi.c: In function 'fsl_espi_bufs':
drivers/spi/spi_fsl_espi.c:232: error: 'struct mpc8xxx_spi' has no member named 'len'
...

Signed-off-by: Jiri Slaby <redacted>
Acked-by: Kumar Gala <redacted>
Cc: Grant Likely <redacted>
---
Maybe Grant is back already?

 drivers/spi/Kconfig |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index 9c90a7a..3d292be 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig

@@ -198,7 +198,7 @@ config SPI_FSL_LIB
 	depends on FSL_SOC
 
 config SPI_FSL_SPI
-	tristate "Freescale SPI controller"
+	bool "Freescale SPI controller"
 	depends on FSL_SOC
 	select SPI_FSL_LIB
 	help

@@ -207,7 +207,7 @@ config SPI_FSL_SPI
 	  MPC8569 uses the controller in QE mode, MPC8610 in cpu mode.
 
 config SPI_FSL_ESPI
-	tristate "Freescale eSPI controller"
+	bool "Freescale eSPI controller"
 	depends on FSL_SOC
 	select SPI_FSL_LIB
 	help

-- 
1.7.7.3