Since new values have been added gradually over various kernel versions,
it's better to define them explicitly in order to avoid situations when
strace built with older kernel headers cannot decode some recently
defined values.
* xlat/clocknames.in: Add values for constants.
-CLOCK_REALTIME
-CLOCK_MONOTONIC
-CLOCK_PROCESS_CPUTIME_ID
-CLOCK_THREAD_CPUTIME_ID
-CLOCK_MONOTONIC_RAW
-CLOCK_REALTIME_COARSE
-CLOCK_MONOTONIC_COARSE
-CLOCK_BOOTTIME
-CLOCK_REALTIME_ALARM
-CLOCK_BOOTTIME_ALARM
-CLOCK_SGI_CYCLE
-CLOCK_TAI
+CLOCK_REALTIME 0
+CLOCK_MONOTONIC 1
+CLOCK_PROCESS_CPUTIME_ID 2
+CLOCK_THREAD_CPUTIME_ID 3
+CLOCK_MONOTONIC_RAW 4
+CLOCK_REALTIME_COARSE 5
+CLOCK_MONOTONIC_COARSE 6
+CLOCK_BOOTTIME 7
+CLOCK_REALTIME_ALARM 8
+CLOCK_BOOTTIME_ALARM 9
+CLOCK_SGI_CYCLE 10
+CLOCK_TAI 11