msm: msm_bus: Modifications for IPA master on 9625

During bootup Apps programs the QOS registers for some masters. Some
of these registers are clocked off of the main core bus clock which needs
to be enabled. Adding this clock node for IPA master.

Also correcting the QOS port num for IPA which is used to compute the
correct register offsets to the QOS registers.

Change-Id: I08ee37427b1fb2cfcded9afb9abc8135d78bf968
Signed-off-by: Girish Mahadevan <girishm@codeaurora.org>