hal: don't allow track offload if there's active sw effect

Incorrect condition check causes direct output still being chosen even
if there's none offload effect enabled. Hence, sw only effect
implementation is bypassed and won't work.

Don't allow track offload if there's active sw effect.

CRs-Fixed: 979125
Change-Id: I79d54581f4347475d347f164b6471744c1301032