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: Ia6b70713d3e9b77d6fd2d9400489ef7f02360364
Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
7 files changed