bcma: add stub for bcma_bus_suspend()

.. and connect it up with the pci host bcma driver.

Now, the next step is to connect those bcma bus-level suspend/resume
functions to the actual bcma device suspend resume functions.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/bcma/bcma_private.h b/drivers/bcma/bcma_private.h
index fda56bd..0def898 100644
--- a/drivers/bcma/bcma_private.h
+++ b/drivers/bcma/bcma_private.h
@@ -19,6 +19,7 @@
 				   struct bcma_device *core_cc,
 				   struct bcma_device *core_mips);
 #ifdef CONFIG_PM
+int bcma_bus_suspend(struct bcma_bus *bus);
 int bcma_bus_resume(struct bcma_bus *bus);
 #endif