change all other clock references to use nanosecond resolution accessors

This was done with:

    sed -i 's/qemu_get_clock\>/qemu_get_clock_ns/' \
        $(git grep -l 'qemu_get_clock\>' )
    sed -i 's/qemu_new_timer\>/qemu_new_timer_ns/' \
        $(git grep -l 'qemu_new_timer\>' )

after checking that get_clock and new_timer never occur twice
on the same line.  There were no missed occurrences; however, even
if there had been, they would have been caught by the compiler.

There was exactly one false positive in qemu_run_timers:

     -    current_time = qemu_get_clock (clock);
     +    current_time = qemu_get_clock_ns (clock);

which is of course not in this patch.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/hw/m48t59.c b/hw/m48t59.c
index 2020487..9f39d6b 100644
--- a/hw/m48t59.c
+++ b/hw/m48t59.c
@@ -123,7 +123,7 @@
         /* Repeat once a second */
         next_time = 1;
     }
-    qemu_mod_timer(NVRAM->alrm_timer, qemu_get_clock(vm_clock) +
+    qemu_mod_timer(NVRAM->alrm_timer, qemu_get_clock_ns(vm_clock) +
                     next_time * 1000);
     qemu_set_irq(NVRAM->IRQ, 0);
 }
@@ -691,8 +691,8 @@
 {
     s->buffer = qemu_mallocz(s->size);
     if (s->type == 59) {
-        s->alrm_timer = qemu_new_timer(vm_clock, &alarm_cb, s);
-        s->wd_timer = qemu_new_timer(vm_clock, &watchdog_cb, s);
+        s->alrm_timer = qemu_new_timer_ns(vm_clock, &alarm_cb, s);
+        s->wd_timer = qemu_new_timer_ns(vm_clock, &watchdog_cb, s);
     }
     qemu_get_timedate(&s->alarm, 0);