libutils: use log/log.h internally

utils/Log.h is one less file we need if we're
splitting up this library for binder.

Bug: 302720583
Test: build
Change-Id: Ibc7ec5402df342627f465354d7cf59e98f450a31
diff --git a/libutils/Threads.cpp b/libutils/Threads.cpp
index e756fec..90ea29b 100644
--- a/libutils/Threads.cpp
+++ b/libutils/Threads.cpp
@@ -34,7 +34,7 @@
 #include <sys/prctl.h>
 #endif
 
-#include <utils/Log.h>
+#include <log/log.h>
 
 #if defined(__ANDROID__)
 #include <processgroup/processgroup.h>