hal: update timestamp type

Update timestamp type to match the type in the header file.

CRs-Fixed: 2278317
Change-Id: I9ac1694e015fd8fc6eccb9014cf77c0755502bbd
diff --git a/hal/audio_hw.c b/hal/audio_hw.c
index fa36879..bd49b74 100644
--- a/hal/audio_hw.c
+++ b/hal/audio_hw.c
@@ -5067,7 +5067,7 @@
         ALOGE("%s: %s", __func__, pcm_get_error(out->pcm));
         return ret;
     }
-    position->time_nanoseconds = ts.tv_sec*1000000000L + ts.tv_nsec;
+    position->time_nanoseconds = ts.tv_sec*1000000000LL + ts.tv_nsec;
     return 0;
 }