spi: omap2-mcspi: Select SPI_SPLIT

The function sg_split will be used by spi-omap2-mcspi to handle a SoC
workaround in the SPI driver. Therefore, select SG_SPLIT so this function
is available to the driver.
Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/Kconfig

@@ -411,6 +411,7 @@ config SPI_OMAP24XX
 	tristate "McSPI driver for OMAP"
 	depends on HAS_DMA
 	depends on ARCH_OMAP2PLUS || COMPILE_TEST
+	select SG_SPLIT
 	help
 	  SPI master controller for OMAP24XX and later Multichannel SPI
 	  (McSPI) modules.