Update QEMU, QEMUv8, HiKey620, HiKey960, Juno and FVP to kernel v5.5

The optee branch in https://github.com/linaro-swg/linux has been
recently rebased onto Linux v5.5. Record this commit in the manifests.

Change-Id: I36da86d6d5f3d75057cc29b9f35310bd61d7a204
Signed-off-by: Jerome Forissier <jerome@forissier.org>
Tested-by: Jerome Forissier <jerome@forissier.org> (QEMU)
Tested-by: Jerome Forissier <jerome@forissier.org> (QEMUv8)
Tested-by: Jerome Forissier <jerome@forissier.org> (HiKey960)
Acked-by: Joakim Bech <joakim.bech@linaro.org>
diff --git a/juno.xml b/juno.xml
index 612d0bc..76ed9d9 100644
--- a/juno.xml
+++ b/juno.xml
@@ -15,7 +15,7 @@
         </project>
 
         <!-- linaro-swg gits -->
-        <project path="linux"                name="linaro-swg/linux.git"                  revision="9823b258b332b4ac98e05fa23448bbc9e937b24c" />
+        <project path="linux"                name="linaro-swg/linux.git"                  revision="1ad01d3482219ee7fcc5a4529f8f06570878bf72" />
         <project path="optee_examples"       name="linaro-swg/optee_examples.git" />
 
         <!-- Misc gits -->