dsp: support mdf memory share cmd

Add support for MultiDSP framework (MDF) memory
share command in q6core driver.

Change-Id: Iff0da10fe835f1fce50d2725960ded5c96237955
Signed-off-by: Aditya Bavanari <abavanar@codeaurora.org>

include/dsp/msm_mdf.h

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2018, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _LINUX_MSM_MDF_H
+#define _LINUX_MSM_MDF_H
+
+#ifdef CONFIG_MSM_MDF
+
+/**
+ *  msm_mdf_mem_init - allocate and map memory to ADSP be shared
+ *                     across multiple remote DSPs.
+ */
+int msm_mdf_mem_init(void);
+
+/**
+ *  msm_mdf_mem_init - unmap and free memory to ADSP.
+ */
+int msm_mdf_mem_deinit(void);
+
+#else
+
+static inline int msm_mdf_mem_init(void)
+{
+	return 0;
+}
+
+static inline int msm_mdf_mem_deinit(void)
+{
+	return 0;
+}
+
+#endif /* CONFIG_MSM_MDF */
+
+#endif /* _LINUX_MSM_MDF_H */