ARM: set vga memory base at run-time

Convert the incorrectly named PCIMEM_BASE to a variable called vga_base.
This removes the dependency on mach/hardware.h.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/mach-integrator/pci_v3.c

@@ -27,6 +27,7 @@
 #include <linux/spinlock.h>
 #include <linux/init.h>
 #include <linux/io.h>
+#include <video/vga.h>
 
 #include <mach/hardware.h>
 #include <mach/platform.h>
@@ -504,6 +505,7 @@ void __init pci_v3_preinit(void)
 
 	pcibios_min_io = 0x6000;
 	pcibios_min_mem = 0x00100000;
+	vga_base = PCI_MEMORY_VADDR;
 
 	/*
 	 * Hook in our fault handler for PCI errors