Trivial spelling fixes throughout the file.

Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Reviewed-by: Tom Saeger <tom.saeger@oracle.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
[ Viresh: Capitalize two words. ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>