linux-firmware: add sst audio firmware for baytrail platforms

This add the fw_sst_0f28.bin binary for the Intel baytrail platforms
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Kyle McMartin <kyle@kernel.org>

WHENCE

@@ -2636,3 +2636,11 @@ File: intel/IntcSST2.bin
 License: Redistributable. See LICENCE.IntcSST2 for details
 
 --------------------------------------------------------------------------
+
+Driver: snd_intel_sst_core
+
+File: intel/fw_sst_0f28.bin
+
+License: Redistributable. See LICENCE.fw_sst_0f28 for details
+
+--------------------------------------------------------------------------