t124: vcm30t124: Enable disable-clock-request for PCIE ports

t124: vcm30t124: Enable disable-clock-request for PCIE ports

Because of a HW bug in T124, clkreq line from the endpoint is not
honored by the PCIE host. A new DT property "disable-clock-request"
handles it such that the driver enables clkref irrespective of clkreq.

Both vcm30t124 based platfroms (p1859 and p2360) use clkreq line from
the EP. So, this patch defines this property for all vcm30t124 based
platforms.

bug 200132704

Change-Id: Iaff60db64ed2512aa21058f576072f97336bf1ad
Signed-off-by: Vipin Kumar <vipink@nvidia.com>
Reviewed-on: http://git-master/r/788587
GVS: Gerrit_Virtual_Submit
Reviewed-by: Sandeep Trasi <strasi@nvidia.com>