default or selected kernelversion does not have config value CONFIG_DVB_SIANO_SMS1XXX.
Result is shown for kernelversion 5.3.7

Siano SMS1XXX USB dongle support

modulename: sms1xxx.ko


Linux Kernel Configuration
└─>Device Drivers
└─>Multimedia devices
└─>DVB/ATSC adapters
└─>Siano SMS1XXX USB dongle support
In linux kernel since version 2.6.27 (release Date: 2008-10-09)  
Choose Y here if you have a USB dongle with a SMS1XXX chipset.

To compile this driver as a module, choose M here: the
module will be called sms1xxx.

source code: