DM: RPMB virtualization

Full logic to supprot vRPMB:
1. Automatic switch between physical or simulated RPMB.
   But hardcode to use simulated one.
2. Parse RPMB cmd to basic APIs to:
   2.1 check request frame HMAC with uos vkey
   2.2 replace RPMB frame with real values.
3. RPMB partitioning for multiple UOS.
   It's hardcoded for coming config file support.

Signed-off-by: Huang Yang <yang.huang@intel.com>
Signed-off-by: Du Min <minx.du@intel.com>
Acked-by: Zhu Bing <bing.zhu@intel.com>

devicemodel/include/rpmb_backend.h

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2018 Intel Corporation
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    this position and unchanged.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef __RPMB_BACKEND_H__
+#define __RPMB_BACKEND_H__
+
+#define RPMB_KEY_32_LEN        32
+
+void rpmb_mode_init(uint16_t mode);
+void rpmb_counter_init(uint32_t counter);
+int rpmb_handler(uint32_t ioc_cmd, void *r);
+int get_virt_rpmb_key(void);
+
+#endif /* __RPMB_BACKEND_H__ */