acpi: add module.h to files implicitly using/relying on it.

These files are using standard module API things like MODULE_AUTHOR
etc. and so should not be relying on an implicit presence of the
module.h header.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/drivers/acpi/sbshc.c b/drivers/acpi/sbshc.c
index f8be23b..f8d2a47 100644
--- a/drivers/acpi/sbshc.c
+++ b/drivers/acpi/sbshc.c
@@ -13,6 +13,7 @@
 #include <linux/wait.h>
 #include <linux/slab.h>
 #include <linux/delay.h>
+#include <linux/module.h>
 #include <linux/interrupt.h>
 #include "sbshc.h"