tree e215dd509571779427c7363fbc0e07250ccd808b
parent ccfc77b6e84c566ca211842e5698ad36cb0e1d72
author Matt Spinler <spinler@us.ibm.com> 1508177718 -0500
committer Matt Spinler <spinler@us.ibm.com> 1508863281 -0500

Only write pwm_enable if it has an env var

Some device drivers don't need pwmX_enable written, so
only do it if an environment variable is present that
contains the value to write.

The environment variable is specified in the conf file
along with the other enviroment variables and would look like:
ENABLE_fan1 = "2"

Change-Id: I484ada60957cb0d2b133a69b36bf12cbaad948dc
Signed-off-by: Matt Spinler <spinler@us.ibm.com>