whitespace and comment format fixes, no code changes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

libbb/kernel_version.c

@@ -6,12 +6,10 @@
  *
  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
-
 #include "libbb.h"
 /* After libbb.h, since it needs sys/types.h on some systems */
 #include <sys/utsname.h>  /* for uname(2) */
 
-
 /* Returns current kernel version encoded as major*65536 + minor*256 + patch,
  * so, for example,  to check if the kernel is greater than 2.2.11:
  *