default or selected kernelversion does not have config value CONFIG_DRM_ACCEL_ROCKET.
Result is shown for kernelversion 6.18-rc3

Rocket (support for Rockchip NPUs)

modulename: rocket.ko

configname: CONFIG_DRM_ACCEL_ROCKET

Linux Kernel Configuration
└─>Device Drivers
└─>Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
└─>Compute Acceleration Framework
└─>Rocket (support for Rockchip NPUs)
Choose this option if you have a Rockchip SoC that contains a
compatible Neural Processing Unit (NPU), such as the RK3588. Called by
Rockchip either RKNN or RKNPU, it accelerates inference of neural
networks.

The interface exposed to userspace is described in
include/uapi/drm/rocket_accel.h and is used by the Rocket userspace
driver in Mesa3D.

If unsure, say N.

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

source code:

depends
CONFIG_DRM
CONFIG_DRM_ACCEL
CONFIG_MMU
CONFIG_COMPILE_TEST or CONFIG_ROCKCHIP_IOMMU
CONFIG_COMPILE_TEST or CONFIG_ARCH_ROCKCHIP
CONFIG_ARM64