Correct explanations of "find_next" bit routines.

Correct the obvious "copy and paste" errors explaining some of the
"find_next" routines.
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Adrian Bunk <bunk@kernel.org>

arch/x86/lib/bitops_32.c

@@ -2,7 +2,7 @@
 #include <linux/module.h>
 
 /**
- * find_next_bit - find the first set bit in a memory region
+ * find_next_bit - find the next set bit in a memory region
  * @addr: The address to base the search on
  * @offset: The bitnumber to start searching at
  * @size: The maximum size to search

arch/x86/lib/bitops_64.c

@@ -58,7 +58,7 @@ long find_first_zero_bit(const unsigned long * addr, unsigned long size)
 }
 
 /**
- * find_next_zero_bit - find the first zero bit in a memory region
+ * find_next_zero_bit - find the next zero bit in a memory region
  * @addr: The address to base the search on
  * @offset: The bitnumber to start searching at
  * @size: The maximum size to search