lib: Fix spelling

Change-Id: I999987af9cb44906e3c3135c0351a0cd6eb210ff
Signed-off-by: Martin Roth <martin.roth@se-eng.com>
Reviewed-on: http://review.coreboot.org/3756
Reviewed-by: Dave Frodin <dave.frodin@se-eng.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/src/lib/libgcov.c b/src/lib/libgcov.c
index 47a427f..f37d0d2 100644
--- a/src/lib/libgcov.c
+++ b/src/lib/libgcov.c
@@ -396,7 +396,7 @@
 #endif
     prefix_length = 0;
 
-  /* If no prefix was specified and a prefix stip, then we assume
+  /* If no prefix was specified and a prefix strip, then we assume
      relative.  */
   if (gcov_prefix_strip != 0 && prefix_length == 0)
     {