Explicitly include log/log.h instead of cutils/log.h

Eliminates the warning.
Test: treehugger

Change-Id: I567d8fea169e688165ede1fb35d1338c565e3645
diff --git a/modules/sensors/multihal.cpp b/modules/sensors/multihal.cpp
index a1f0104..f41d72f 100644
--- a/modules/sensors/multihal.cpp
+++ b/modules/sensors/multihal.cpp
@@ -18,7 +18,7 @@
 #include "multihal.h"
 
 #define LOG_NDEBUG 1
-#include <cutils/log.h>
+#include <log/log.h>
 #include <cutils/atomic.h>
 #include <hardware/sensors.h>