lib: reduce the use of module.h wherever possible

For files only using THIS_MODULE and/or EXPORT_SYMBOL, map
them onto including export.h -- or if the file isn't even
using those, then just delete the include.  Fix up any implicit
include dependencies that were being masked by module.h along
the way.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/lib/fault-inject.c b/lib/fault-inject.c
index b4801f5..6805453 100644
--- a/lib/fault-inject.c
+++ b/lib/fault-inject.c
@@ -5,7 +5,7 @@
 #include <linux/stat.h>
 #include <linux/types.h>
 #include <linux/fs.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/interrupt.h>
 #include <linux/stacktrace.h>
 #include <linux/fault-inject.h>