ANDROID: phy: qcom: qmp: Use power_on/off ops for PCIe

The PCIe PHY needs to be initialized as part of the PCI initialization
and should therefore implement the power_on/power_off ops, rather than
init/exit.

Bug: 146449535
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
(cherry picked from commit 49020f887a7ee8da2271e0e3f3eeb83925f80fb8
https://git.linaro.org/landing-teams/working/qualcomm/kernel.git


qclt/integration-linux-qcomlt  - An unstable rebased branch)
Signed-off-by: John Stultz <john.stultz@linaro.org>
Change-Id: I90bec4df92abb86984ef617a65d0ed98e8702545