ARM: PCI: remove unused sys->hw

Some platforms mark their hw_pci structure as __initdata, which means
it will be discarded after init time.  Storing pointers to __initdata
in long lived data structures is a potential source of problems, and
in this case, sys->hw is unused apart from its initialization.

So, lets remove this member and its initializer.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/include/asm/mach/pci.h

@@ -45,7 +45,6 @@ struct pci_sys_data {
 	u8		(*swizzle)(struct pci_dev *, u8 *);
 					/* IRQ mapping				*/
 	int		(*map_irq)(const struct pci_dev *, u8, u8);
-	struct hw_pci	*hw;
 	void		*private_data;	/* platform controller private data	*/
 };
 

arch/arm/kernel/bios32.c

@@ -424,7 +424,6 @@ static void __init pcibios_init_hw(struct hw_pci *hw)
 #ifdef CONFIG_PCI_DOMAINS
 		sys->domain  = hw->domain;
 #endif
-		sys->hw      = hw;
 		sys->busnr   = busnr;
 		sys->swizzle = hw->swizzle;
 		sys->map_irq = hw->map_irq;