sparc: Fix misspellings in comments.

Signed-off-by: Adam Buchbinder <adam.buchbinder@gmail.com>
Reviewed-by: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/include/asm/processor_64.h b/arch/sparc/include/asm/processor_64.h
index 6924bde..ce2595c 100644
--- a/arch/sparc/include/asm/processor_64.h
+++ b/arch/sparc/include/asm/processor_64.h
@@ -201,7 +201,7 @@
 #define KSTK_ESP(tsk)  (task_pt_regs(tsk)->u_regs[UREG_FP])
 
 /* Please see the commentary in asm/backoff.h for a description of
- * what these instructions are doing and how they have been choosen.
+ * what these instructions are doing and how they have been chosen.
  * To make a long story short, we are trying to yield the current cpu
  * strand during busy loops.
  */