msm: clock-8974: Add USB3 RAM clocks to be used by USB BAMs

USB BAM (either 2.0 or 3.0) when configured to operate in
bam to bam mode may require to use USB3 RAM as BAM FIFOs
depending on the peripheral BAM or system configuration.
This change allows BAM driver to turn ON the necessary
clocks which are required to make USB3 RAM accessible.

Change-Id: Icffb475573c52a9880746559183903471c912228
Signed-off-by: Manu Gautam <mgautam@codeaurora.org>