[SPARC64]: Spelling fixes.

Spelling fixes in arch/sparc64/.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/kernel/process.c b/arch/sparc64/kernel/process.c
index 8e3c6e4..952762b 100644
--- a/arch/sparc64/kernel/process.c
+++ b/arch/sparc64/kernel/process.c
@@ -677,7 +677,7 @@
  * NOTE! Only a kernel-only process(ie the swapper or direct descendants
  * who haven't done an "execve()") should use this: it will work within
  * a system call from a "real" process, but the process memory space will
- * not be free'd until both the parent and the child have exited.
+ * not be freed until both the parent and the child have exited.
  */
 pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
 {