avr32: Remove second definition of virt_to_phys()

The second definition introduced by 65e43a1063 conflicts with the
existing one.

Also, convert the existing definition to use phys_addr_t. The volatile
qualifier is still needed due to brain damage elsewhere.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>

include/asm-avr32/io.h

@@ -76,12 +76,12 @@ extern void __readwrite_bug(const char *fn);
 #include <asm/addrspace.h>
 
 /* virt_to_phys will only work when address is in P1 or P2 */
-static __inline__ unsigned long virt_to_phys(volatile void *address)
+static inline phys_addr_t virt_to_phys(volatile void *address)
 {
 	return PHYSADDR(address);
 }
 
-static __inline__ void * phys_to_virt(unsigned long address)
+static inline void *phys_to_virt(phys_addr_t address)
 {
 	return (void *)P1SEGADDR(address);
 }
@@ -125,9 +125,4 @@ static inline void unmap_physmem(void *vaddr, unsigned long len)
 
 }
 
-static inline phys_addr_t virt_to_phys(void * vaddr)
-{
-	return (phys_addr_t)(vaddr);
-}
-
 #endif /* __ASM_AVR32_IO_H */