ARM: Use include/asm-generic/io.h

Include the generic I/O header file so that duplicate implementations
can be removed. This will also help to establish consistency across more
architectures regarding which accessors they support.

Signed-off-by: Thierry Reding <treding@nvidia.com>
diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
index e731018..184def0 100644
--- a/arch/arm/include/asm/memory.h
+++ b/arch/arm/include/asm/memory.h
@@ -274,11 +274,13 @@
  * translation for translating DMA addresses.  Use the driver
  * DMA support - see dma-mapping.h.
  */
+#define virt_to_phys virt_to_phys
 static inline phys_addr_t virt_to_phys(const volatile void *x)
 {
 	return __virt_to_phys((unsigned long)(x));
 }
 
+#define phys_to_virt phys_to_virt
 static inline void *phys_to_virt(phys_addr_t x)
 {
 	return (void *)__phys_to_virt(x);
@@ -322,11 +324,13 @@
 #endif
 
 #ifdef CONFIG_VIRT_TO_BUS
+#define virt_to_bus virt_to_bus
 static inline __deprecated unsigned long virt_to_bus(void *x)
 {
 	return __virt_to_bus((unsigned long)x);
 }
 
+#define bus_to_virt bus_to_virt
 static inline __deprecated void *bus_to_virt(unsigned long x)
 {
 	return (void *)__bus_to_virt(x);