board/embest/riotboard/genimage.cfg: beautify file

Beatify this genimage .cfg file to have consistency with all genimage .cfg
files in Buildroot.

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

board/embest/riotboard/genimage.cfg

@@ -1,17 +1,17 @@
 image sdcard.img {
-    hdimage {
-    }
+	hdimage {
+	}
 
-    partition u-boot {
-        in-partition-table = "no"
-        image = "u-boot.imx"
-        offset = 1024
-    }
+	partition u-boot {
+		in-partition-table = "no"
+		image = "u-boot.imx"
+		offset = 1K
+	}
 
-    partition rootfs {
-        partition-type = 0x83
-        image = "rootfs.ext2"
-        offset = 1M
-        size = 60M
-    }
+	partition rootfs {
+		partition-type = 0x83
+		image = "rootfs.ext2"
+		offset = 1M
+		size = 60M
+	}
 }