boot_control_copy should #include <sys/sysmacros.h>.

Bug: https://github.com/android-ndk/ndk/issues/398
Test: builds
Change-Id: Icfccc98e1ff5aaa53b288e2aba0efe2c2c77a623
diff --git a/boot_control_copy/boot_control_copy.c b/boot_control_copy/boot_control_copy.c
index 7302243..d8a5d18 100644
--- a/boot_control_copy/boot_control_copy.c
+++ b/boot_control_copy/boot_control_copy.c
@@ -16,6 +16,7 @@
 
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <sys/sysmacros.h>
 #include <unistd.h>
 #include <fcntl.h>