The PCIe PHY initialization requires the attached device to be present,
which is primarily achieved by the PCI controller driver.  So move the
logic from init/exit to power_on/power_off.
Signed-off-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: NJohn Stultz <john.stultz@linaro.org>
Reviewed-by: NVinod Koul <vkoul@kernel.org>
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>