board/qemu/aarch64-sbsa/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/qemu/aarch64-sbsa/genimage.cfg

@@ -1,27 +1,29 @@
 image efi-part.vfat {
-  vfat {
-    file EFI {
-      image = "efi-part/EFI"
-    }
-    file Image {
-      image = "Image"
-    }
-  }
-  size = 64M
+	vfat {
+		file EFI {
+			image = "efi-part/EFI"
+		}
+
+		file Image {
+			image = "Image"
+		}
+	}
+
+	size = 64M
 }
 
 image disk.img {
-  hdimage {
-    gpt = true
-  }
+	hdimage {
+		gpt = true
+	}
 
-  partition boot {
-    partition-type = 0xEF
-    image = "efi-part.vfat"
-  }
+	partition boot {
+		partition-type = 0xEF
+		image = "efi-part.vfat"
+	}
 
-  partition root {
-    partition-type = 0x83
-    image = "rootfs.ext2"
-  }
+	partition root {
+		partition-type = 0x83
+		image = "rootfs.ext2"
+	}
 }