[IA64] fix declaration of __find_next_zero_bit, first arg is "const"

Signed-off-by: Bob Picco <bob.picco@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

arch/ia64/lib/bitop.c

@@ -8,7 +8,7 @@
  * Find next zero bit in a bitmap reasonably efficiently..
  */
 
-int __find_next_zero_bit (void *addr, unsigned long size, unsigned long offset)
+int __find_next_zero_bit (const void *addr, unsigned long size, unsigned long offset)
 {
 	unsigned long *p = ((unsigned long *) addr) + (offset >> 6);
 	unsigned long result = offset & ~63UL;

include/asm-ia64/bitops.h

@@ -359,7 +359,7 @@ hweight64 (unsigned long x)
 
 #endif /* __KERNEL__ */
 
-extern int __find_next_zero_bit (void *addr, unsigned long size,
+extern int __find_next_zero_bit (const void *addr, unsigned long size,
 			unsigned long offset);
 extern int __find_next_bit(const void *addr, unsigned long size,
 			unsigned long offset);