MTP: add Linux host library for MTP/PTP host support.

Change-Id: Ie2ce60b957ee428a8e8db46a70c5a0ade8445007
Signed-off-by: Mike Lockwood <lockwood@android.com>
diff --git a/media/mtp/MtpEventPacket.cpp b/media/mtp/MtpEventPacket.cpp
index 089278e..fc74542 100644
--- a/media/mtp/MtpEventPacket.cpp
+++ b/media/mtp/MtpEventPacket.cpp
@@ -21,7 +21,9 @@
 #include <fcntl.h>
 #include <sys/ioctl.h>
 
+#ifdef MTP_DEVICE
 #include <linux/usb/f_mtp.h>
+#endif
 
 #include "MtpEventPacket.h"