arm64: defconfig: Enable Qualcomm QUSB2 PHY

Tested on the Lenovo Yoga C630 where this patch enables USB.
Without it USB devices are not enumerated.

Link: https://lore.kernel.org/r/20190903192625.14775-3-lee.jones@linaro.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm64/configs/defconfig

@@ -788,6 +788,7 @@ CONFIG_PHY_HISTB_COMBPHY=y
 CONFIG_PHY_HISI_INNO_USB2=y
 CONFIG_PHY_MVEBU_CP110_COMPHY=y
 CONFIG_PHY_QCOM_QMP=m
+CONFIG_PHY_QCOM_QUSB2=m
 CONFIG_PHY_QCOM_USB_HS=y
 CONFIG_PHY_RCAR_GEN3_PCIE=y
 CONFIG_PHY_RCAR_GEN3_USB2=y