TIMESPEC_TO_TIMEVAL is a macro defined by glibc... remove this for musl-0.9.16.

--- sys-utils/dmesg.c.orig     2014-01-07 21:40:23.490421172 +0100
+++ sys-utils/dmesg.c  2014-01-07 21:41:22.419080539 +0100
@@ -35,6 +35,12 @@
 #include "mangle.h"
 #include "pager.h"

+#ifndef TIMESPEC_TO_TIMEVAL
+#define TIMESPEC_TO_TIMEVAL(tv, ts) {         \
+      (tv)->tv_sec = (ts)->tv_sec;            \
+      (tv)->tv_usec = (ts)->tv_nsec / 1000;   \
+}
+#endif
 /* Close the log.  Currently a NOP. */
 #define SYSLOG_ACTION_CLOSE          0
 /* Open the log. Currently a NOP. */