spi: rockchip: Add architecture dependency

If base support for Rockchip SoCs has been disabled then the SPI driver
won't be terribly useful, add a dependency on ARCH_ROCKCHIP || COMPILE_TEST
to avoid it appearing when not needed.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230221-spi-arch-deps-v1-2-83d1566474cf@kernel.orgSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/Kconfig

@@ -777,6 +777,7 @@ config SPI_PXA2XX_PCI
 
 config SPI_ROCKCHIP
 	tristate "Rockchip SPI controller driver"
+	depends on ARCH_ROCKCHIP || COMPILE_TEST
 	help
 	  This selects a driver for Rockchip SPI controller.