default or selected kernelversion does not have config value CONFIG_DVB_CINERGYT2_ENABLE_RC_INPUT_DEVICE.
Result is shown for kernelversion 5.3.7

Register the onboard IR Remote Control Receiver as Input Device

configname: CONFIG_DVB_CINERGYT2_ENABLE_RC_INPUT_DEVICE

Linux Kernel Configuration
└─>Device Drivers
└─>Multimedia devices
└─>DVB/ATSC adapters
└─>Register the onboard IR Remote Control Receiver as Input Device
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
Enable this option if you want to use the onboard Infrared Remote
Control Receiver as Linux-Input device.

Right now only the keycode table for the default Remote Control
delivered with the device is supported, please see the driver
source code to find out how to add support for other controls.