EQ IIR: Increase IPC length, simplify initialization, and dcache invalidate code#317

lgirdwood merged 2 commits intothesofproject:masterthesofproject/sof:masterfrom

singalsu:eq_iir_simplify_init_dcache_invalidate_proposalsingalsu/sof:eq_iir_simplify_init_dcache_invalidate_proposalCopy head branch name to clipboard