Spelling fixes

Spelling errors found using github.com/lucasdemarchi/codespell
A tool to fix common misspellings.
This tool is licensed under GNU General Public License, version 2.

Change-Id: I30fd1f3678a2e0fa1c24f6d5b2c0970903db4596
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/test/utest.cpp b/test/utest.cpp
index ea08ea0..455179c 100644
--- a/test/utest.cpp
+++ b/test/utest.cpp
@@ -15,7 +15,7 @@
         }
         ~LedTest()
         {
-            // Leaving upto auto cleanup.
+            // Leaving up to auto cleanup.
         }
 };