feat(ff-a): update FF-A version to v1.2

Bump the required FF-A version in framework and manifests to v1.2 as
upstream feature development goes.

Signed-off-by: Kathleen Capella <kathleen.capella@arm.com>
Change-Id: I09d936d4aad89965cfd13f58741d647223b63a34
diff --git a/plat/arm/board/fvp/fdts/fvp_spmc_optee_sp_manifest.dts b/plat/arm/board/fvp/fdts/fvp_spmc_optee_sp_manifest.dts
index 041dade..17a2fd1 100644
--- a/plat/arm/board/fvp/fdts/fvp_spmc_optee_sp_manifest.dts
+++ b/plat/arm/board/fvp/fdts/fvp_spmc_optee_sp_manifest.dts
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020-2021, Arm Limited. All rights reserved.
+ * Copyright (c) 2020-2023, Arm Limited. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -20,7 +20,7 @@
 	attribute {
 		spmc_id = <0x8000>;
 		maj_ver = <0x1>;
-		min_ver = <0x1>;
+		min_ver = <0x2>;
 		exec_state = <0x0>;
 		load_address = <0x0 0x6000000>;
 		entrypoint = <0x0 0x6000000>;