[PATCH] drivers: pci: Add prototype declarations of function in appropriate header

[Rashika Kheria <rashika.kheria@gmail.com>]

Add prototype declarations of functions arch_msi_mask_irq() and
arch_msix_mask_irq() to header file include/linux/msi.h.

This eliminates the following warning in msi.c:
drivers/pci/msi.c:202:12: warning: no previous prototype for ‘arch_msi_mask_irq’ [-Wmissing-prototypes]
drivers/pci/msi.c:232:12: warning: no previous prototype for ‘arch_msix_mask_irq’ [-Wmissing-prototypes]

Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
---
 include/linux/msi.h |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/msi.h b/include/linux/msi.h
index 009b024..63b7d14 100644
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -66,6 +66,8 @@ void default_teardown_msi_irqs(struct pci_dev *dev);
 void default_restore_msi_irqs(struct pci_dev *dev, int irq);
 u32 default_msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag);
 u32 default_msix_mask_irq(struct msi_desc *desc, u32 flag);
+u32 arch_msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag);
+u32 arch_msix_mask_irq(struct msi_desc *desc, u32 flag);
 
 struct msi_chip {
 	struct module *owner;
-- 
1.7.9.5