spi/build: Remove SPI_SIRF from compile test

It now needs the architecture dependant DMA driver.
Signed-off-by: NMark Brown <broonie@linaro.org>

drivers/spi/Kconfig

@@ -404,7 +404,7 @@ config SPI_SH_HSPI
 
 config SPI_SIRF
 	tristate "CSR SiRFprimaII SPI controller"
-	depends on ARCH_SIRF || COMPILE_TEST
+	depends on ARCH_SIRF
 	select SPI_BITBANG
 	help
 	  SPI driver for CSR SiRFprimaII SoCs