msm: clock-8960: Add remaining PCIE clocks for 8064

There are some PCIE clocks need to be supported. Add
them in this patch.

Note that for pcie_phy_ref_clk, it sources from an external
clock controlled by pcie driver. Therefore, only when pcie
driver is enabled and configures its source clock, this clock
can be enabled.

Change-Id: Ie91193fc00d64989dad660c79d56d49eac39ba20
Signed-off-by: Tianyi Gou <tgou@codeaurora.org>