phy: mtk-tphy: add support for MediaTek MT7621 SoC

This patch makes mtk-tphy driver available for MediaTek MT7621 SoC

Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index 4a3856d..c25b42c 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -266,7 +266,7 @@
 config PHY_MTK_TPHY
 	bool "MediaTek T-PHY Driver"
 	depends on PHY
-	depends on ARCH_MEDIATEK
+	depends on ARCH_MEDIATEK || SOC_MT7621
 	help
 	  MediaTek T-PHY driver supports usb2.0, usb3.0 ports, PCIe and
 	  SATA, and meanwhile supports two version T-PHY which have