Change CLOCK_MONOTONIC to CLOCK_MONOTONIC_RAW for GpuWorkPeriodEvent comments.

Bug: b/233056303
Change-Id: I0c06c7026e8d6323cd1ce154ebd2aeac161190db
diff --git a/services/gpuservice/gpuwork/bpfprogs/gpu_work.c b/services/gpuservice/gpuwork/bpfprogs/gpu_work.c
index 95cfae7..d73fff4 100644
--- a/services/gpuservice/gpuwork/bpfprogs/gpu_work.c
+++ b/services/gpuservice/gpuwork/bpfprogs/gpu_work.c
@@ -153,11 +153,11 @@
     uint32_t uid;
 
     // The start time of the period in nanoseconds. The clock must be
-    // CLOCK_MONOTONIC, as returned by the ktime_get_ns(void) function.
+    // CLOCK_MONOTONIC_RAW, as returned by the ktime_get_raw_ns(void) function.
     uint64_t start_time_ns;
 
     // The end time of the period in nanoseconds. The clock must be
-    // CLOCK_MONOTONIC, as returned by the ktime_get_ns(void) function.
+    // CLOCK_MONOTONIC_RAW, as returned by the ktime_get_raw_ns(void) function.
     uint64_t end_time_ns;
 
     // The amount of time the GPU was running GPU work for |uid| during the