radv: New shader args for NGG culling settings and viewport.

radv: New shader args for NGG culling settings and viewport.

Add new shader arguments in RADV for:
- NGG culling settings
- Viewport transform

These will be used by NGG culling shaders.

Additionally, some tweaks are made to some config registers
in order to make culling shaders more efficient.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10525>