ext4_utils: Export headers for libext4_utils* libs.
So we can do "#include <ext4_utils/make_ext4fs.h>" without adding
"LOCAL_C_INCLUDES += system/extras/ext4_utils".
Also clean up the #include lines in system/extras/ext4_utils/.
Test: `m checkbuild` works.
Change-Id: I3c8b07c9b6f5996160e0cb6d9d069579b1609f60
(cherry picked from commit 018ef1be61e749d0fbe0f05179a4f0f9b858ae57)
diff --git a/ext4_utils/setup_fs.c b/ext4_utils/setup_fs.c
index 56c563f..802412d 100644
--- a/ext4_utils/setup_fs.c
+++ b/ext4_utils/setup_fs.c
@@ -1,9 +1,10 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <unistd.h>
#include <sys/reboot.h>
#include <sys/wait.h>
+#include <unistd.h>
+
#include <cutils/android_reboot.h>
#include <cutils/partition_utils.h>
