WIP: Integrate RAUC and U-Boot

Change-Id: I699e72e3229953af62393b9a1fa199e6767aba0b
diff --git a/board/czechlight/clearfog/overlay/etc/fw_env.config b/board/czechlight/clearfog/overlay/etc/fw_env.config
new file mode 100644
index 0000000..fbbc548
--- /dev/null
+++ b/board/czechlight/clearfog/overlay/etc/fw_env.config
@@ -0,0 +1,2 @@
+/dev/mmcblk0 0xf0000 0x10000 0x200
+/dev/mmcblk0 0xe0000 0x10000 0x200