board/raspberrypi/genimage-raspberrypi3-64.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/raspberrypi/genimage-raspberrypi3-64.cfg

@@ -1,33 +1,34 @@
 image boot.vfat {
-  vfat {
-    files = {
-      "bcm2710-rpi-3-b.dtb",
-      "bcm2710-rpi-3-b-plus.dtb",
-      "bcm2837-rpi-3-b.dtb",
-      "rpi-firmware/bootcode.bin",
-      "rpi-firmware/cmdline.txt",
-      "rpi-firmware/config.txt",
-      "rpi-firmware/fixup.dat",
-      "rpi-firmware/start.elf",
-      "rpi-firmware/overlays",
-      "Image"
-    }
-  }
-  size = 32M
+	vfat {
+		files = {
+			"bcm2710-rpi-3-b.dtb",
+			"bcm2710-rpi-3-b-plus.dtb",
+			"bcm2837-rpi-3-b.dtb",
+			"rpi-firmware/bootcode.bin",
+			"rpi-firmware/cmdline.txt",
+			"rpi-firmware/config.txt",
+			"rpi-firmware/fixup.dat",
+			"rpi-firmware/start.elf",
+			"rpi-firmware/overlays",
+			"Image"
+		}
+	}
+
+	size = 32M
 }
 
 image sdcard.img {
-  hdimage {
-  }
+	hdimage {
+	}
 
-  partition boot {
-    partition-type = 0xC
-    bootable = "true"
-    image = "boot.vfat"
-  }
+	partition boot {
+		partition-type = 0xC
+		bootable = "true"
+		image = "boot.vfat"
+	}
 
-  partition rootfs {
-    partition-type = 0x83
-    image = "rootfs.ext4"
-  }
+	partition rootfs {
+		partition-type = 0x83
+		image = "rootfs.ext4"
+	}
 }