phy: Enable compile testing for some of drivers

Some of the phy drivers can be compile tested to increase build
coverage.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200103164710.4829-2-krzk@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/phy/broadcom/Kconfig b/drivers/phy/broadcom/Kconfig
index d3d983c1..b29f11c 100644
--- a/drivers/phy/broadcom/Kconfig
+++ b/drivers/phy/broadcom/Kconfig
@@ -50,7 +50,7 @@
 
 config PHY_NS2_PCIE
 	tristate "Broadcom Northstar2 PCIe PHY driver"
-	depends on OF && MDIO_BUS_MUX_BCM_IPROC
+	depends on (OF && MDIO_BUS_MUX_BCM_IPROC) || (COMPILE_TEST && MDIO_BUS)
 	select GENERIC_PHY
 	default ARCH_BCM_IPROC
 	help
@@ -83,7 +83,7 @@
 
 config PHY_BRCM_USB
 	tristate "Broadcom STB USB PHY driver"
-	depends on ARCH_BRCMSTB
+	depends on ARCH_BRCMSTB || COMPILE_TEST
 	depends on OF
 	select GENERIC_PHY
 	select SOC_BRCMSTB