phy: allwinner: allow compile testing

Some allwinner specific drivers can be built for testing purposes
on non-sunxi configurations, which then results in a harmless
warning:

WARNING: unmet direct dependencies detected for PHY_SUN6I_MIPI_DPHY
  Depends on [n]: ARCH_SUNXI [=n] && HAS_IOMEM [=y] && OF [=y] && RESET_CONTROLLER [=y]
  Selected by [y]:
  - DRM_SUN6I_DSI [=y] && HAS_IOMEM [=y] && DRM_SUN4I [=y]

Allow compile-test here as well to avoid the warning, and improve
overall build coverage.

Fixes: 5d134abf ("phy: Move Allwinner A31 D-PHY driver to drivers/phy/")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

drivers/phy/allwinner/Kconfig

@@ -3,7 +3,8 @@
 #
 config PHY_SUN4I_USB
 	tristate "Allwinner sunxi SoC USB PHY driver"
-	depends on ARCH_SUNXI && HAS_IOMEM && OF
+	depends on ARCH_SUNXI || COMPILE_TEST
+	depends on HAS_IOMEM
 	depends on RESET_CONTROLLER
 	depends on EXTCON
 	depends on POWER_SUPPLY
@@ -19,7 +20,8 @@ config PHY_SUN4I_USB
 
 config PHY_SUN6I_MIPI_DPHY
 	tristate "Allwinner A31 MIPI D-PHY Support"
-	depends on ARCH_SUNXI && HAS_IOMEM && OF
+	depends on ARCH_SUNXI || COMPILE_TEST
+	depends on HAS_IOMEM
 	depends on RESET_CONTROLLER
 	select GENERIC_PHY
 	select GENERIC_PHY_MIPI_DPHY
@@ -31,7 +33,8 @@ config PHY_SUN6I_MIPI_DPHY
 
 config PHY_SUN9I_USB
 	tristate "Allwinner sun9i SoC USB PHY driver"
-	depends on ARCH_SUNXI && HAS_IOMEM && OF
+	depends on ARCH_SUNXI || COMPILE_TEST
+	depends on HAS_IOMEM
 	depends on RESET_CONTROLLER
 	depends on USB_SUPPORT
 	select USB_COMMON