tree: Remove blank lines before '}' and after '{'

Change-Id: I46a362270f69d0a4a28e5bb9c954f34d632815ff
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81455
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/device/mmio.c

@@ -40,5 +40,4 @@ void buffer_to_fifo32_prefix(const void *buffer, u32 prefix, int prefsz, size_t
 		val = 0;
 		j = 0;
 	}
-
 }