Revert "logd: liblog: logcat: switch to android_log_clockid()"

This reverts commit 77b5696b1dea6f7afed89e113e479f4a131c14fc.

Change-Id: I7711bf1a7e3f72ed29a2498d7287b725a0e624bd
diff --git a/logd/LogBuffer.cpp b/logd/LogBuffer.cpp
index c8127c3..fd5c066 100644
--- a/logd/LogBuffer.cpp
+++ b/logd/LogBuffer.cpp
@@ -128,7 +128,7 @@
         }
     }
     bool lastMonotonic = monotonic;
-    monotonic = android_log_clockid() == CLOCK_MONOTONIC;
+    monotonic = android_log_timestamp() == 'm';
     if (lastMonotonic == monotonic) {
         return;
     }
@@ -167,7 +167,7 @@
 }
 
 LogBuffer::LogBuffer(LastLogTimes *times):
-        monotonic(android_log_clockid() == CLOCK_MONOTONIC),
+        monotonic(android_log_timestamp() == 'm'),
         mTimes(*times) {
     pthread_mutex_init(&mLogElementsLock, NULL);