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/spd.h

@@ -136,7 +136,6 @@
 /* SDRAM Device Minimum Auto Refresh to Active/Auto Refresh (tRFC) */
 #define SPD_tRFC			    42
 
-
 /* SPD_MEMORY_TYPE values. */
 enum spd_memory_type {
 	SPD_MEMORY_TYPE_UNDEFINED		= 0x00,