[POWERPC] Add missing newline in xmon help output

My patch to add spu disassembly (af89fb8041562508895c8f3ba04790d7c2f4338c)
removed a newline from the xmon help that it shouldn't have, put it back.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 0183e5f..bf299b6 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -218,7 +218,7 @@
 "  ss	stop execution on all spus\n\
   sr	restore execution on stopped spus\n\
   sf  #	dump spu fields for spu # (in hex)\n\
-  sd  #	dump spu local store for spu # (in hex)\
+  sd  #	dump spu local store for spu # (in hex)\n\
   sdi #	disassemble spu local store for spu # (in hex)\n"
 #endif
 "  S	print special registers\n\