Preparing an image for VIA Epia boards

Credits for the GRUB2 setup go to [1]; in the end it's actually a bit
simpler.

[1] http://lists.busybox.net/pipermail/buildroot/2014-April/095234.html

Change-Id: I47a30be4a62f32d09c5c329809e2f958d05d6c64
diff --git a/board/czechlight/epia/genimage.cfg b/board/czechlight/epia/genimage.cfg
new file mode 100644
index 0000000..a84794f
--- /dev/null
+++ b/board/czechlight/epia/genimage.cfg
@@ -0,0 +1,20 @@
+image hdimage.img {
+	hdimage {
+		align = 1M
+	}
+	partition mbr {
+		in-partition-table = "no"
+		image = "boot.img"
+		offset = 0
+		size = 512
+	}
+	partition grub {
+		in-partition-table = "no"
+		image = "grub.img"
+		offset = 512
+	}
+	partition rootfs {
+		partition-type = 0x83
+		image = "rootfs.ext4"
+	}
+}