The NXP i.MX 8QuadXPlus SOC a new ADC IP, so add
binding documentation for NXP IMX8QXP ADC.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Link: https://lore.kernel.org/r/20210925020555.129-3-caihuoqing@baidu.comSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>