Include what you use: <fcntl.h>

This was transitively included, but no longer is, so it must be
explicitly included.

Exempt-From-Owner-Approval: Janitorial
Test: build
Change-Id: Id88ee5113aa9f0a223dfabfc164ce17747727647
diff --git a/native/android/sharedmem.cpp b/native/android/sharedmem.cpp
index 4410bd6..338b280 100644
--- a/native/android/sharedmem.cpp
+++ b/native/android/sharedmem.cpp
@@ -16,6 +16,9 @@
 
 #include <jni.h>
 
+#include <fcntl.h>
+#include <unistd.h>
+
 #include <android/sharedmem.h>
 #include <android/sharedmem_jni.h>
 #include <cutils/ashmem.h>
@@ -23,7 +26,6 @@
 #include <utils/Errors.h>
 
 #include <mutex>
-#include <unistd.h>
 
 static struct {
     jclass clazz;