phy: starfive: StarFive PHYs should depend on ARCH_STARFIVE

The various StarFive PHYs are only present on StarFive SoCs.  Hence add
a dependency on ARCH_STARFIVE, to prevent asking the user about these
drivers when configuring a kernel without StarFive SoC support.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Changhuang Liang <changhuang.liang@starfivetech.com>
Link: https://lore.kernel.org/r/12097f6107a18e2f7cfb80f47ac7b27808e062c4.1690300076.git.geert+renesas@glider.beSigned-off-by: Vinod Koul <vkoul@kernel.org>

drivers/phy/starfive/Kconfig

@@ -3,6 +3,8 @@
 # Phy drivers for StarFive platforms
 #
 
+if ARCH_STARFIVE || COMPILE_TEST
+
 config PHY_STARFIVE_JH7110_DPHY_RX
 	tristate "StarFive JH7110 D-PHY RX support"
 	depends on HAS_IOMEM
@@ -32,3 +34,5 @@ config PHY_STARFIVE_JH7110_USB
 	  used with the Cadence USB controller.
 	  If M is selected, the module will be called
 	  phy-jh7110-usb.ko.
+
+endif # ARCH_STARFIVE || COMPILE_TEST