Fix spelling mistakes using codespell

This commit corrects various spelling mistakes throughout the
repository. The corrections were made automatically using `codespell`[1]
tool.

[1]: https://github.com/codespell-project/codespell

Change-Id: I539a0c5baa63be240fc1c76367c0af338dd89c7b
Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
diff --git a/common/bios_utils.hpp b/common/bios_utils.hpp
index e1a98d3..01ca4aa 100644
--- a/common/bios_utils.hpp
+++ b/common/bios_utils.hpp
@@ -64,7 +64,7 @@
 
         /** @brief Get the entry pointed by the iterator
          *
-         *  @return Poiner to the entry
+         *  @return Pointer to the entry
          */
         const T* operator*() const
         {