h_config: add gpio command

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
mx6_r_config: add gpio command

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
nit6xlite_config: add gpio command

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
nitrogen6x_config: add gpio command

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
nw_config: add gpio command

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
oc_config: add gpio command

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
s_config: add gpio command

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
sp_config: add gpio command

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>