Revert "hikey960: Remove hifi dsp support."

This reverts commit 1d7e5889cd761a9eaecb130c52582d2b0707a08d.

Reason for revert: previous commit broke build_test target, b/219798815

Change-Id: If678459053b79b81de27a1b7d514cc0c6101d97d
diff --git a/hifi/xaf/hifi-dpf/include/audio/xa-audio-decoder-api.h b/hifi/xaf/hifi-dpf/include/audio/xa-audio-decoder-api.h
new file mode 100644
index 0000000..797bf23
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/audio/xa-audio-decoder-api.h
@@ -0,0 +1,66 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xa-audio-decoder-api.h
+ *
+ * Generic audio decoder API
+ *
+ ******************************************************************************/
+
+#ifndef __XA_ADEC_API_H__
+#define __XA_ADEC_API_H__
+
+/* ...includes */
+#include "xa_type_def.h"
+#include "xa_error_standards.h"
+#include "xa_apicmd_standards.h"
+#include "xa_memory_standards.h"
+
+/* ...generic audio-decoder configuration parameters */
+enum xa_config_param_codec {
+    XA_CODEC_CONFIG_PARAM_CHANNELS       = 0x10000 + 0,
+    XA_CODEC_CONFIG_PARAM_SAMPLE_RATE    = 0x10000 + 1,
+    XA_CODEC_CONFIG_PARAM_PCM_WIDTH      = 0x10000 + 2,
+    XA_CODEC_CONFIG_PARAM_PRODUCED       = 0x10000 + 3
+};
+
+/* ...ports indices */
+enum xa_codec_ports {
+    XA_CODEC_INPUT_PORT  = 0,
+    XA_CODEC_OUTPUT_PORT = 1
+};
+
+/* ...non-fatal execution errors */
+enum
+{
+    XA_CODEC_EXEC_NO_DATA = XA_ERROR_CODE(xa_severity_nonfatal, xa_class_execute, XA_CODEC_GENERIC, 0)
+};
+
+/* ...fatal execution errors */
+enum
+{
+    XA_CODEC_EXEC_SEQUENCE = XA_ERROR_CODE(xa_severity_fatal, xa_class_execute, XA_CODEC_GENERIC, 0),
+    XA_CODEC_EXEC_MISBEHAVING = XA_ERROR_CODE(xa_severity_fatal, xa_class_execute, XA_CODEC_GENERIC, 1),
+};
+
+#endif