ARM: dts: msm: PCIe turn-on of NTN3 regulator

Rename all occurrences of NTN3 regulator as QPS615.
Turn on of QPS615 regulator by PCIe and also replace depedency of
AQR regulator on QCA regulator with QPS615 regulator.

Change-Id: I6962b57d8f1cfbb15473b21a93dc5d559464015e