fvp: update TF-A to v2.9

Update Trusted Firmware-A to latest released version. Update it's
dependency MbedTLS to v3.4.0 to fulfill requirements when measured
boot is enabled.

Signed-off-by: Gyorgy Szing <gyorgy.szing@arm.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
diff --git a/fvp.xml b/fvp.xml
index 017fdd8..bea9cfc 100644
--- a/fvp.xml
+++ b/fvp.xml
@@ -23,8 +23,8 @@
         <project path="edk2"                 name="tianocore/edk2.git"                    revision="dd4cae4d82c7477273f3da455084844db5cca0c0" />
         <project path="edk2-platforms"       name="tianocore/edk2-platforms.git"          revision="02daa58c21f89628b4d8c76f95f3a554289149bc" />
         <project path="grub"                 name="grub.git"                              revision="refs/tags/grub-2.02" clone-depth="1" remote="savannah" />
-        <project path="trusted-firmware-a"   name="TF-A/trusted-firmware-a.git"           revision="refs/tags/v2.8" clone-depth="1" remote="tfo" />
-        <project path="mbedtls"              name="Mbed-TLS/mbedtls.git"                  revision="refs/tags/mbedtls-2.28.1" />
+        <project path="trusted-firmware-a"   name="TF-A/trusted-firmware-a.git"           revision="refs/tags/v2.9" clone-depth="1" remote="tfo" />
+        <project path="mbedtls"              name="Mbed-TLS/mbedtls.git"                  revision="refs/tags/mbedtls-3.4.0" />
 
         <!-- fTPM implementation -->
         <project path="ms-tpm-20-ref"        name="microsoft/ms-tpm-20-ref"               revision="98b60a44aba79b15fcce1c0d1e46cf5918400f6a" />