msm: pcie: add QSERDES PHY support for mdmcalifornium

The current PHY sequence is not fully compatible with the
QSERDES PHY found on mdmcalifornium. Thus, add the new
sequence and other changes to support PCIe QSERDES PHY
on mdmcalifornium.

Change-Id: I5a5d0b115651a159612e17debf0d25d6f88dbee8
Signed-off-by: Tony Truong <truong@codeaurora.org>