default or selected kernelversion does not have config value CONFIG_DRM_NOVA.
Result is shown for kernelversion 6.16-rc7

Nova DRM driver

modulename: nova.ko

configname: CONFIG_DRM_NOVA

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
└─>PCI support
└─>Nova DRM driver
In linux kernel since version 6.1.145 (release Date: 2025-07-14)  
Choose this if you want to build the Nova DRM driver for Nvidia
GSP-based GPUs.

This driver is work in progress and may not be functional.

If M is selected, the module will be called nova.

source code: