TF-A: Add support for Measured Boot driver in BL1 and BL2

This patch adds support for Measured Boot driver functionality
in BL1 and BL2 code.

Change-Id: I7239a94c3e32b0a3e9e73768a0140e0b52ab0361
Signed-off-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
diff --git a/bl2/bl2_main.c b/bl2/bl2_main.c
index 802c174..203e1d4 100644
--- a/bl2/bl2_main.c
+++ b/bl2/bl2_main.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2019, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2020, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -14,6 +14,9 @@
 #include <common/debug.h>
 #include <drivers/auth/auth_mod.h>
 #include <drivers/console.h>
+#if MEASURED_BOOT
+#include <drivers/measured_boot/measured_boot.h>
+#endif
 #include <lib/extensions/pauth.h>
 #include <plat/common/platform.h>
 
@@ -88,14 +91,25 @@
 #if TRUSTED_BOARD_BOOT
 	/* Initialize authentication module */
 	auth_mod_init();
+
+#if MEASURED_BOOT
+	/* Initialize measured boot module */
+	measured_boot_init();
+
+#endif /* MEASURED_BOOT */
 #endif /* TRUSTED_BOARD_BOOT */
 
-	/* initialize boot source */
+	/* Initialize boot source */
 	bl2_plat_preload_setup();
 
 	/* Load the subsequent bootloader images. */
 	next_bl_ep_info = bl2_load_images();
 
+#if MEASURED_BOOT
+	/* Finalize measured boot */
+	measured_boot_finish();
+#endif /* MEASURED_BOOT */
+
 #if !BL2_AT_EL3
 #ifndef __aarch64__
 	/*