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: I48d318c53cbfb76849f987029b0c8e775f576496
diff --git a/camera/device/1.0/default/CameraDevice.cpp b/camera/device/1.0/default/CameraDevice.cpp
index 2dd6094..80733d1 100644
--- a/camera/device/1.0/default/CameraDevice.cpp
+++ b/camera/device/1.0/default/CameraDevice.cpp
@@ -15,6 +15,9 @@
  */
 
 #define LOG_TAG "CamDev@1.0-impl"
+
+#include <fcntl.h>
+
 #include <hardware/camera.h>
 #include <hardware/gralloc1.h>
 #include <hidlmemory/mapping.h>