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.

Change-Id: I27e68d5ebf2f49fb6571ad777318483f9c123407
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
Signed-off-by: Mayank Rana <mrana@codeaurora.org>