Bionic: Fix wrong prototype of system call clock_nanosleep

In bionic/libc/SYSCALLS.TXT, the prototype of system call
clock_nanosleep is incorrect.

According to man page:
int clock_nanosleep(clockid_t clock_id, int flags,
                    const struct timespec *request,
                    struct timespec *remain);

Change-Id: Ic44c6db3d632293aa17998035554eacd664c2d57
Signed-off-by: Jin Wei <wei.a.jin@intel.com>
Signed-off-by: Jack Ren <jack.ren@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
diff --git a/libc/include/sys/linux-unistd.h b/libc/include/sys/linux-unistd.h
index d945d87..8422d7e 100644
--- a/libc/include/sys/linux-unistd.h
+++ b/libc/include/sys/linux-unistd.h
@@ -142,7 +142,7 @@
 int              clock_gettime (clockid_t clk_id, struct timespec *tp);
 int              clock_settime (clockid_t clk_id, const struct timespec *tp);
 int              clock_getres (clockid_t clk_id, struct timespec *res);
-int              clock_nanosleep (const struct timespec *req, struct timespec *rem);
+int              clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req, struct timespec *rem);
 int              getitimer (int, const struct itimerval *);
 int              setitimer (int, const struct itimerval *, struct itimerval *);
 int              __timer_create (clockid_t clockid, struct sigevent *evp, timer_t *timerid);