usb: phy: qmp: Remove portselect for USB3 only phy

Remove portselect for USB3 only phy since MUX selection
for USB3 only phy can be done outside the phy driver. This
change also corrects one typo.

Change-Id: I230760e7ae3a19d3970da674ed688c4b0906076e
Signed-off-by: Pratham Pratap <prathampratap@codeaurora.org>