s390: add missing module.h/export.h includes

Fix several compile errors on s390 caused by splitting module.h.

Some include additions [e.g. qdio_setup.c, zfcp_qdio.c] are in
anticipation of pending changes queued for s390 that increase
the modular use footprint.

[PG: added additional obvious changes since Heiko's original patch]

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c
index 2d32233..e792436 100644
--- a/drivers/s390/cio/chp.c
+++ b/drivers/s390/cio/chp.c
@@ -10,6 +10,8 @@
 #include <linux/bug.h>
 #include <linux/workqueue.h>
 #include <linux/spinlock.h>
+#include <linux/export.h>
+#include <linux/sched.h>
 #include <linux/init.h>
 #include <linux/jiffies.h>
 #include <linux/wait.h>