mtd: nand: make PCI device id constant

Author: Márton Németh <nm127@freemail.hu>

The id_table field of the struct pci_driver is constant in 
so it is worth to make cafe_nand_tbl also constant.

The semantic match that finds this kind of pattern is as follows:
(http://coccinelle.lip6.fr/)

// 
@r@
disable decl_init,const_decl_init;
identifier I1, I2, x;
@@
	struct I1 {
	  ...
	  const struct I2 *x;
	  ...
	};
@s@
identifier r.I1, y;
identifier r.x, E;
@@
	struct I1 y = {
	  .x = E,
	};
@c@
identifier r.I2;
identifier s.E;
@@
	const struct I2 E[] = ... ;
@depends on !c@
identifier r.I2;
identifier s.E;
@@
+	const
	struct I2 E[] = ...;
// 

Signed-off-by: Márton Németh 
Cc: Julia Lawall 
Cc: cocci@diku.dk
Signed-off-by: Artem Bityutskiy 
Signed-off-by: David Woodhouse 

---
 drivers/mtd/nand/cafe_nand.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
 
diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c
index c828d9a..67e2b33 100644
--- a/drivers/mtd/nand/cafe_nand.c
+++ b/drivers/mtd/nand/cafe_nand.c
@@ -848,7 +848,7 @@ static void __devexit cafe_nand_remove(struct pci_dev *pdev)
 	kfree(mtd);
 }
 
-static struct pci_device_id cafe_nand_tbl[] = {
+static const struct pci_device_id cafe_nand_tbl[] = {
 	{ PCI_VENDOR_ID_MARVELL, PCI_DEVICE_ID_MARVELL_88ALP01_NAND,
 	  PCI_ANY_ID, PCI_ANY_ID },
 	{ }