Fix spelling in comment

registrs -> registers

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
diff --git a/hostregs_helper.h b/hostregs_helper.h
index 9f0872d..3a0bece 100644
--- a/hostregs_helper.h
+++ b/hostregs_helper.h
@@ -1,5 +1,5 @@
 /*
- *  Save/restore host registrs.
+ *  Save/restore host registers.
  *
  *  Copyright (c) 2007 CodeSourcery
  *