timer: rename NSEC_PER_SEC due to Mac OS X header clash

Commit e0cf11f31c24cfb17f44ed46c254d84c78e7f6e9 ("timer: Use a single
definition of NSEC_PER_SEC for the whole codebase") renamed
NANOSECONDS_PER_SECOND to NSEC_PER_SEC.

On Mac OS X there is a <dispatch/time.h> system header which also
defines NSEC_PER_SEC.  This causes compiler warnings.

Let's use the old name instead.  It's longer but it doesn't clash.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1436364609-7929-1-git-send-email-stefanha@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
diff --git a/tests/rtl8139-test.c b/tests/rtl8139-test.c
index 3bff0e3..e749be3 100644
--- a/tests/rtl8139-test.c
+++ b/tests/rtl8139-test.c
@@ -86,7 +86,7 @@
         fatal("time too big %u\n", curr);
     }
     for (cnt = 0; ; ) {
-        clock_step(1 * NSEC_PER_SEC);
+        clock_step(1 * NANOSECONDS_PER_SECOND);
         prev = curr;
         curr = in_Timer();
 
@@ -125,7 +125,7 @@
     out_IntrStatus(0x4000);
     curr = in_Timer();
     out_TimerInt(curr + 0.5 * CLK);
-    clock_step(1 * NSEC_PER_SEC);
+    clock_step(1 * NANOSECONDS_PER_SECOND);
     out_Timer(0);
     if ((in_IntrStatus() & 0x4000) == 0) {
         fatal("we should have an interrupt here!\n");
@@ -137,7 +137,7 @@
     out_IntrStatus(0x4000);
     curr = in_Timer();
     out_TimerInt(curr + 0.5 * CLK);
-    clock_step(1 * NSEC_PER_SEC);
+    clock_step(1 * NANOSECONDS_PER_SECOND);
     out_TimerInt(0);
     if ((in_IntrStatus() & 0x4000) == 0) {
         fatal("we should have an interrupt here!\n");
@@ -148,7 +148,7 @@
     next = curr + 5.0 * CLK;
     out_TimerInt(next);
     for (cnt = 0; ; ) {
-        clock_step(1 * NSEC_PER_SEC);
+        clock_step(1 * NANOSECONDS_PER_SECOND);
         prev = curr;
         curr = in_Timer();
         diff = (curr-prev) & 0xffffffffu;