[POWERPC] Fix copyright symbol

It seems to have been munged by patchwork.
Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

arch/powerpc/platforms/iseries/vio.c

@@ -2,7 +2,7 @@
  * Legacy iSeries specific vio initialisation
  * that needs to be built in (not a module).
  *
- * © Copyright 2007 IBM Corporation
+ * © Copyright 2007 IBM Corporation
  *	Author: Stephen Rothwell
  *	Some parts collected from various other files
  *