msm: ep_pcie: Avoid check for l23_ready in d3hot,d0 scenario

ep_pcie_core_wakeup_host() checks for l23_ready, this results in
WAKE pin getting asserted while PERST is already de-asserted.
Becausee enable_end_point already completed, WAKE is never toggled
back to the original state and remains asserted.

Removing the check for l23_ready and thus preventing WAKE
assert when PERST is in de-asserted state.

Change-Id: I1389ad0f24af7d0d1877563327190737f9872611
Signed-off-by: Subramanian Ananthanarayanan <skananth@codeaurora.org>
Signed-off-by: Gauri Joshi <gaurjosh@codeaurora.org>