Implement the code related to the GetMixedComponentVersion()

Change-Id: I98aad97b4cb6498b7f2fc03a2d5ee7c9e949d5f1
Signed-off-by: Chen Gong <curry.gong@amd.com>

include/rdc/rdc_private.h

@@ -0,0 +1,66 @@
+
+#ifndef INCLUDE_RDC_RDC_PRIVATE_H_
+#define INCLUDE_RDC_RDC_PRIVATE_H_
+
+#include "rdc/rdc.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif  // __cplusplus
+
+#ifdef __cplusplus
+
+// cstddef include causes issues on older GCC
+// use stddef.h instead
+#if __GNUC__ < 9
+#include <stddef.h>
+#else
+#include <cstddef>
+#endif  // __GNUC__
+
+#include <cstdint>
+#else
+#include <stddef.h>
+#include <stdint.h>
+#endif  // __cplusplus
+
+/**
+ * @brief The maximum string length occupied by version information.
+ */
+#define USR_MAX_VERSION_STR_LENGTH 60
+
+/**
+ * @brief Version information of mixed components
+ */
+typedef struct {
+  char version[USR_MAX_VERSION_STR_LENGTH];
+} mixed_component_version_t;
+
+/**
+ * @brief Type of Components
+ */
+typedef enum {
+  RDCD_COMPONENT
+  //If needed later, add them one by one
+} mixed_component_t;
+
+/**
+ *  @brief Get ersion information of mixed components.
+ *
+ *  @details Given a component type, return its version information.
+ *
+ *  @param[in] p_rdc_handle The RDC handler.
+ *
+ *  @param[in] component Component type.
+ *
+ *  @param[out] p_mixed_compv Version information of the corresponding component.
+ *
+ *  @retval ::RDC_ST_OK is returned upon successful call.
+ */
+rdc_status_t get_mixed_component_version(rdc_handle_t p_rdc_handle, mixed_component_t component, mixed_component_version_t* p_mixed_compv);
+
+#ifdef __cplusplus
+}
+#endif  // __cplusplus
+
+#endif  // INCLUDE_RDC_RDC_PRIVATE_H_