ASoC: Intel: mrfld - Define ipc_info structure

This will be used to abstract the differances in ipc offsets for different
chips.

Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

arch/x86/include/asm/platform_sst_audio.h

@@ -102,6 +102,11 @@ struct sst_lib_dnld_info {
 	bool mod_ddr_dnld;
 };
 
+struct sst_ipc_info {
+	int ipc_offset;
+	unsigned int mbox_recv_off;
+};
+
 struct sst_platform_info {
 	const struct sst_info *probe_data;
 	const struct sst_ipc_info *ipc_info;