fvp, spmc: add missing manifest entry

TF-A v2.9 introduced a new mandatory property called
"tpm_event_log_max_size" to the "tb_fw_config" DTB under the
"tpm_evet_log" node. Add this property to the SPMC manifest
file for v2.9 compatibility.

Signed-off-by: Gyorgy Szing <gyorgy.szing@arm.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
diff --git a/fvp/spmc_manifest.dts b/fvp/spmc_manifest.dts
index 47b5176..d88b473 100644
--- a/fvp/spmc_manifest.dts
+++ b/fvp/spmc_manifest.dts
@@ -30,6 +30,7 @@
 		compatible = "arm,tpm_event_log";
 		tpm_event_log_addr = <0x0 0x0>;
 		tpm_event_log_size = <0x0>;
+		tpm_event_log_max_size = <0x0>;
 	};
 #endif