phy: meson-gxl-usb: depend on Meson AXG aswell

Enable build of meson-gxl-usb PHY for the AXG architecture aswell.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index 9c77510..912e29f 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -164,7 +164,7 @@
 
 config MESON_GXL_USB_PHY
 	bool "Amlogic Meson GXL USB PHYs"
-	depends on PHY && ARCH_MESON && (MESON_GXL || MESON_GXM)
+	depends on PHY && ARCH_MESON && (MESON_GXL || MESON_GXM || MESON_AXG)
 	imply REGMAP
 	help
 	  This is the generic phy driver for the Amlogic Meson GXL