Draft: radv/amdgpu: add CYAN_SKILLFISH support

EXPERIMENTAL CYAN_SKILLFISH/BC-250 SUPPORT WITH RT, WIP

What does this MR do and why?

Enables detection of CYAN_SKILLFISH APU, which is basically RDNA1 with added support for ray tracing. See https://llvm.org/docs/AMDGPU/AMDGPUAsmGFX1013.html

It is said to be used in PS5 and AMD BC-250 mining board.

This patch is experimental. While hardware ray tracing using ray query in a set of non-trivial compute shaders seems to work, ray tracing pipeline hasn't been tested at all.