feat(handoff): add additional TE tags

`TL_TAG_EXEC_EP_INFO64` type entries represent the `entry_point_info_t`
data structure. This structure provides the consumer with the execution
environment of an image. This is needed primarily in BL31 to execute
subsequent images i.e. BL32, BL33, or NT FW.

`TL_TAG_DT_SPMC_MANIFEST` holds the SPMC (Secure Partition Manager Core)
manifest image which is in DT format.

Change-Id: I80c4a72d639851457bc3c9b158b2e56041e8b29a
Signed-off-by: Harrison Mutai <harrison.mutai@arm.com>
diff --git a/include/lib/transfer_list.h b/include/lib/transfer_list.h
index 5ea5a41..bc915a4 100644
--- a/include/lib/transfer_list.h
+++ b/include/lib/transfer_list.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023, Linaro Limited and Contributors. All rights reserved.
+ * Copyright (c) 2023-2024, Linaro Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -42,6 +42,8 @@
 	TL_TAG_HOB_LIST = 3,
 	TL_TAG_ACPI_TABLE_AGGREGATE = 4,
 	TL_TAG_OPTEE_PAGABLE_PART = 0x100,
+	TL_TAG_DT_SPMC_MANIFEST = 0x101,
+	TL_TAG_EXEC_EP_INFO64 = 0x102,
 };
 
 enum transfer_list_ops {