clk: qcom: gcc-sdm855: Update the PCIe pipe clock structures

The PCIe client driver needs to control the peripheral and
core memories of the pipe clocks on SDM855. Update the clock
structures for the same to allow doing so.

Change-Id: Ic34b21d2d8767eab4831fe14df26a90257ff90b8
Signed-off-by: Deepak Katragadda <dkatraga@codeaurora.org>