Since it has memory limitation on sdx platform,
also it need different TX buffer configuration for
different case, which require the IPA tx buffer
numbers to be configurable but not only be power
of 2. So did such change for Genoa to meet different
IPA TX buffer config.
Change-Id: I4482e8f37957d3bfcd82645cf0dec0257ad80e80
CRs-Fixed: 2865851