Updating default.xml

Change-Id: Ic7758bece87f655b1af63c7e3ccfa5caf45ba64f

Author: seL4-ci

default.xml

@@ -31,7 +31,7 @@
   <project name="picotcp.git" path="projects/picotcp" remote="picotcp" revision="13c00a067190f5ec62340ed932a2bb833c366d63" upstream="refs/tags/v1.7.0" dest-branch="refs/tags/v1.7.0"/>
   <project name="polly" path="tools/polly" remote="polly" revision="ef7e79c2c297d456f2742fd0b976f555d058d4e0" upstream="master" dest-branch="master"/>
   <project name="projects_libs.git" path="projects/projects_libs" revision="250ebdc6a1b74ddb12f99eee34c2b41570fe0afa" upstream="master" dest-branch="master"/>
-  <project name="seL4.git" path="kernel" revision="6059924669d701a1341d69e7e3fb0e8010ade384" upstream="master" dest-branch="master"/>
+  <project name="seL4.git" path="kernel" revision="e820aa91fe6fb3313d379622477275a3694ec263" upstream="master" dest-branch="master"/>
   <project name="seL4_libs" path="projects/seL4_libs" revision="06527c27c73961b2a21fa19d064c8cdf400c0911" upstream="master" dest-branch="master"/>
   <project name="seL4_projects_libs.git" path="projects/seL4_projects_libs" revision="0c75408d9ace91b4425f0d53a69913b49a109371" upstream="master" dest-branch="master"/>
   <project name="seL4_tools.git" path="tools/seL4" revision="4580a846ba756d2959492dc71f402eed952b3a45" upstream="master" dest-branch="master">