Use cJSON to read the GPIO configuration

Change the read_gpios function to get the power GPIO
configuration out of JSON instead of D-Bus.

Note that the Host Control GPIOs are no longer used and will
be removed from the GpioConfigs structure in a future commit.

Change-Id: If95f9b4f11af052148332aec436abd23e2e5819d
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
1 file changed