board/beaglev/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/beaglev/genimage.cfg

@@ -1,12 +1,12 @@
 image sdcard.img {
-  hdimage {
-    gpt = true
-  }
+	hdimage {
+		gpt = true
+	}
 
-  partition rootfs {
-    partition-type-uuid = 72ec70a6-cf74-40e6-bd49-4bda08e8f224
-    partition-uuid = 0fef845a-c6e1-45bc-82f7-002fa720f958
-    bootable = "true"
-    image = "rootfs.ext4"
-  }
+	partition rootfs {
+		partition-type-uuid = 72ec70a6-cf74-40e6-bd49-4bda08e8f224
+		partition-uuid = 0fef845a-c6e1-45bc-82f7-002fa720f958
+		bootable = "true"
+		image = "rootfs.ext4"
+	}
 }