SPINEL_PROP_GPIO_STATE_CLEAR value

GPIO State Clear-Only Bitmask Format: `D` Type: Write-Only Allows for the state of various output GPIOs to be cleared without affecting other GPIO states. Contains a bit field identifying the output GPIOs that should have their state cleared to 0. When writing, unspecified bits are assumed to be zero. The value of any bits for GPIOs which are not specified in `PROP_GPIO_CONFIG` MUST be ignored.