PCI: dwc: Fail dw_pcie_host_init() if dw_pcie_wait_for_link() returns -ETIMEDOUT

PCI: dwc: Fail dw_pcie_host_init() if dw_pcie_wait_for_link() returns -ETIMEDOUT

The dw_pcie_wait_for_link() API now distinguishes link failures more
precisely:

-ENODEV: Device not found on the bus.
-EIO: Device found but inactive.
-ETIMEDOUT: Link failed to come up.

Out of these three errors, only -ETIMEDOUT represents a definitive link
failure since it signals that something is wrong with the link. For the
other two errors, there is a possibility that the link might come up later.
So fail dw_pcie_host_init() if -ETIMEDOUT is returned and skip the failure
otherwise.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
Link: https://patch.msgid.link/20260120-pci-dwc-suspend-rework-v4-5-2f32d5082549@oss.qualcomm.com