rauc: Do not require an extra partition

...because we can do better by patching the built-in U-Boot's
configuration. Yup, it's a patch that is going to be quite painful to
maintain, but on the other hand the whole idea here is to *not* touch
the bootloader anyway because that is a risky operation. For that, it's
arguably safer to not rely on yet another piece of configuration (the
boot script) for reliable operation.

Change-Id: Ie559cf07d1dc6e50bc6ff80320509e3933b0af93
diff --git a/board/czechlight/common/overlay/usr/lib/systemd/system/rauc-mark-good.service b/board/czechlight/common/overlay/usr/lib/systemd/system/rauc-mark-good.service
new file mode 100644
index 0000000..ae0ab6d
--- /dev/null
+++ b/board/czechlight/common/overlay/usr/lib/systemd/system/rauc-mark-good.service
@@ -0,0 +1,11 @@
+[Unit]
+Description=RAUC Good-marking Service
+ConditionKernelCommandLine=|rauc.slot
+After=sysrepod.service netopeer2-server.service
+Requires=sysrepod.service netopeer2-server.service
+
+[Service]
+ExecStart=/usr/bin/rauc status mark-good
+
+[Install]
+WantedBy=multi-user.target