feat(fwu): initialize FWU driver in BL2

Initialized FWU driver module in BL2 component under
build flag PSA_FWU_SUPPORT.

Change-Id: I08b191599835925c355981d695667828561b9a21
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
diff --git a/bl2/bl2_main.c b/bl2/bl2_main.c
index 203e1d4..d2de135 100644
--- a/bl2/bl2_main.c
+++ b/bl2/bl2_main.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2020, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2021, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -14,6 +14,7 @@
 #include <common/debug.h>
 #include <drivers/auth/auth_mod.h>
 #include <drivers/console.h>
+#include <drivers/fwu/fwu.h>
 #if MEASURED_BOOT
 #include <drivers/measured_boot/measured_boot.h>
 #endif
@@ -88,6 +89,10 @@
 	/* Perform remaining generic architectural setup in S-EL1 */
 	bl2_arch_setup();
 
+#if PSA_FWU_SUPPORT
+	fwu_init();
+#endif /* PSA_FWU_SUPPORT */
+
 #if TRUSTED_BOARD_BOOT
 	/* Initialize authentication module */
 	auth_mod_init();