linux: switch from simplefb to simpledrm

[Icenowy]

Package name

linux

openRuyi version

2026.05

Describe the bug

The driver enabled for simplefb devices is still simplefb (CONFIG_FB_SIMPLE) instead of simpledrm (CONFIG_DRM_SIMPLEDRM).

Fbdev is deprecated and some applications do not want to use it.

Steps to reproduce

Boot the system with a device tree with simple-framebuffer.

RVVM is an example for having such a device.

Expected behaviour

/dev/dri should exist.

Screenshots

No response

Relevant log output

Additional context

No response

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• I assert that this is not a duplicate of an existing issue.
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