system/core: preparation to pull back interfaces from android/log.h
Point to log/log.h where necessary, define LOG_TAG where necessary.
Accept that private/android_logger.h is suitable replacement for
log/logger.h and android/log.h.
Correct liblog/README
Effectively a cleanup and controlled select revert of
'system/core: drop or replace log/logger.h' and
'system/core: Replace log/log.h with android/log.h'.
Test: compile
Bug: 30465923
Change-Id: Ic2ad157bad6f5efe2c6af293a73bb753300b17a2
diff --git a/libion/ion.c b/libion/ion.c
index 424776a..4565efb 100644
--- a/libion/ion.c
+++ b/libion/ion.c
@@ -27,6 +27,7 @@
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/types.h>
+#include <unistd.h>
#include <android/log.h>
#include <ion/ion.h>