Fix up some of the basic x86 offenders on __iomem usage.

arch/i386/kernel/pci-dma.c

@@ -72,7 +72,7 @@ void dma_free_coherent(struct device *dev, size_t size,
 int dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
 				dma_addr_t device_addr, size_t size, int flags)
 {
-	void *mem_base;
+	void __iomem *mem_base;
 	int pages = size >> PAGE_SHIFT;
 	int bitmap_size = (pages + 31)/32;
 

arch/i386/pci/mmconfig.c

@@ -9,7 +9,7 @@
 /* The physical address of the MMCONFIG aperture.  Set from ACPI tables. */
 u32 pci_mmcfg_base_addr;
 
-#define mmcfg_virt_addr (fix_to_virt(FIX_PCIE_MCFG))
+#define mmcfg_virt_addr ((void __iomem *) fix_to_virt(FIX_PCIE_MCFG))
 
 /* The base address of the last MMCONFIG device accessed */
 static u32 mmcfg_last_accessed_device;

arch/x86_64/kernel/early_printk.c

@@ -8,7 +8,7 @@
 /* Simple VGA output */
 
 #ifdef __i386__
-#define VGABASE		__pa((void *)(__PAGE_OFFSET + 0xb8000UL))
+#define VGABASE		(__ISA_IO_base + 0xb8000)
 #else
 #define VGABASE		0xffffffff800b8000UL
 #endif