spi/sunxi: Add missing dependency on RESET_CONTROLLER

Signed-off-by: Mark Brown <broonie@linaro.org>

drivers/spi/Kconfig

@@ -449,6 +449,7 @@ config SPI_SIRF
 config SPI_SUN6I
 	tristate "Allwinner A31 SPI controller"
 	depends on ARCH_SUNXI || COMPILE_TEST
+	depends on RESET_CONTROLLER
 	help
 	  This enables using the SPI controller on the Allwinner A31 SoCs.