bcma: clean exports of functions

Function managing IRQs is needed for external drivers like b43.
On the other side we do not expect writing any hosts drivers outside of
bcma, so this is safe to do not export functions related to this.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

include/linux/bcma/bcma_driver_pci.h

@@ -85,5 +85,7 @@ struct bcma_drv_pci {
 #define pcicore_write32(pc, offset, val)	bcma_write32((pc)->core, offset, val)
 
 extern void bcma_core_pci_init(struct bcma_drv_pci *pc);
+extern int bcma_core_pci_irq_ctl(struct bcma_drv_pci *pc,
+				 struct bcma_device *core, bool enable);
 
 #endif /* LINUX_BCMA_DRIVER_PCI_H_ */