spi: dw-mmio: remove HAVE_CLK build dependecy

Since 93abe8e4 (clk: add non CONFIG_HAVE_CLK routines) code using clk.h
like this platform driver needs not depend on HAVE_CLK.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Mark Brown <broonie@linaro.org>

drivers/spi/Kconfig

@@ -546,7 +546,7 @@ config SPI_DW_MID_DMA
 
 config SPI_DW_MMIO
 	tristate "Memory-mapped io interface driver for DW SPI core"
-	depends on SPI_DESIGNWARE && HAVE_CLK
+	depends on SPI_DESIGNWARE
 
 #
 # There are lots of SPI device types, with sensors and memory