Depend on sel4runtime for platsupport and utils

Platsupport and utils now need sel4runtime.
diff --git a/libsel4platsupport/CMakeLists.txt b/libsel4platsupport/CMakeLists.txt
index cfbfe6c..f4e03e0 100644
--- a/libsel4platsupport/CMakeLists.txt
+++ b/libsel4platsupport/CMakeLists.txt
@@ -75,6 +75,7 @@
     Configuration
     muslc
     sel4
+    sel4runtime
     sel4simple
     utils
     sel4vspace
diff --git a/libsel4utils/CMakeLists.txt b/libsel4utils/CMakeLists.txt
index fc0388a..0d2f599 100644
--- a/libsel4utils/CMakeLists.txt
+++ b/libsel4utils/CMakeLists.txt
@@ -62,6 +62,7 @@
     Configuration
     muslc
     sel4
+    sel4runtime
     sel4vspace
     sel4simple
     sel4platsupport