IPA SMMU mapping for RX buffers is needed only when IPA offload
and IPA pipes are enabled. Currently in STA only case where IPA
is not enabled SMMU map/unmap is done for RX buffers. So enable
SMMU mapping only when IPA pipes are enabled.
Change-Id: I88db2cc8606bdf4586644a7ffccd0415f85c8241
CRs-Fixed: 2213795