Minor typos found by the new checkpatch boosted by the dictionary
provided by 'codespell'.
While there, fix one indentation.
Change-Id: I72369ed26f363bacd760b40b8c83dd95e89d28a4
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/6214
Tested-by: jenkins