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/target-ppc/kvm.c b/target-ppc/kvm.c
index bd4012a..3134590 100644
--- a/target-ppc/kvm.c
+++ b/target-ppc/kvm.c
@@ -85,7 +85,7 @@
     sregs.pvr = cenv->spr[SPR_PVR];
     ret = kvm_vcpu_ioctl(cenv, KVM_SET_SREGS, &sregs);
 
-    idle_timer = qemu_new_timer(vm_clock, kvm_kick_env, cenv);
+    idle_timer = qemu_new_timer_ns(vm_clock, kvm_kick_env, cenv);
 
     return ret;
 }
@@ -246,7 +246,7 @@
             printf("cpu %d fail inject %x\n", env->cpu_index, irq);
 
         /* Always wake up soon in case the interrupt was level based */
-        qemu_mod_timer(idle_timer, qemu_get_clock(vm_clock) +
+        qemu_mod_timer(idle_timer, qemu_get_clock_ns(vm_clock) +
                        (get_ticks_per_sec() / 50));
     }