msm: ipa3: Fix to hold the clock until replenish the descriptors

When CPU load is high IPA buffer replenish WQ scheduling got delayed
because of that not able to replenish the descriptors. Add changes to
hold the clock until replenish the minimum number of descriptors.

Change-Id: Iea79dcaa90d12fc4324522ba2c63dfcdfded2f90
Signed-off-by: Ashok Vuyyuru <avuyyuru@codeaurora.org>