ARM: dts: qcom: ipq8064: disable usb phy by default

Disable usb phy by default. When the usb phy were pushed, half of them
were flagged as disabled by mistake.
Correctly disable all usb phy and enable them only if a device actually
use them.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220707010943.20857-6-ansuelsmth@gmail.com