Remove yet more kernel header dependancies.

-Erik

util-linux/dmesg.c

@@ -23,7 +23,7 @@
 
 #ifndef __alpha__
 # define __NR_klogctl __NR_syslog
-#include <linux/unistd.h>
+#include <sys/syscall.h>
 static inline _syscall3(int, klogctl, int, type, char *, b, int, len);
 #else							/* __alpha__ */
 #define klogctl syslog

util-linux/swaponoff.c

@@ -28,7 +28,7 @@
 #include <mntent.h>
 #include <dirent.h>
 #include <errno.h>
-#include <linux/unistd.h>
+#include <sys/syscall.h>
 
 _syscall2(int, swapon, const char *, path, int, flags);
 _syscall1(int, swapoff, const char *, path);