default or selected kernelversion does not have config value CONFIG_LEDS_GPIO_PLATFORM.
Result is shown for kernelversion 5.6.18

Platform device bindings for GPIO LEDs


Linux Kernel Configuration
└─>Device Drivers
└─>LED Support
└─>Platform device bindings for GPIO LEDs
In linux kernel since version 2.6.30 (release Date: 2009-06-09)  
Let the leds-gpio driver drive LEDs which have been defined as
platform devices. If you don't know what this means, say yes.