Fixes tags need work in the pwm tree

[Mark Brown]

In commit

  d2252319f89e4 ("pwm: tiehrpwm: Enable pwmchip's parent device before setting configuration")

Fixes tag

  Fixes: 5f027d9b83db("pwm: tiehrpwm: Implement .apply() callback")

has these problem(s):

  - missing space between the SHA1 and the subject