USB: phy: qusb: Turn on vdd along with 1p8/3p3 LDOs when PMI requests

QUSB PHY requires VDD, 1p8 and 3p1 regulators to remove any unwanted
pull downs on DP/DM lines. These pull downs may result in incorrect charger
detection by PMI. Avoid incorrect charger detection by turning on VDD,
1p8 and 3p1 whenever PMI requests DP/DM to be floating.

CRs-Fixed: 973849
Change-Id: I88bc2f5e3d4d0e02087755941fe22af176c978f7
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>