src/include: Drop unneeded empty lines

Change-Id: Ie325541547ea10946f41a8f979d144a06a7e80eb
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44611
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

src/include/device_tree.h

@@ -43,8 +43,6 @@ struct fdt_property
 	uint32_t size;
 };
 
-
-
 /*
  * Unflattened device tree structures.
  */
@@ -88,8 +86,6 @@ struct device_tree
 	struct device_tree_node *root;
 };
 
-
-
 /*
  * Flattened device tree functions. These generally return the number of bytes
  * which were consumed reading the requested value.
@@ -109,8 +105,6 @@ int fdt_skip_node(const void *blob, uint32_t offset);
    invalidates the unflattened one. */
 struct device_tree *fdt_unflatten(const void *blob);
 
-
-
 /*
  * Unflattened device tree functions.
  */