[PC98VID] Fix video driver settings

- Store settings in non hardware-profile registry key.
- Rename driver file to vgapnp.sys to keep in sync with VBE.
- This makes PC-98 video driver working again.

[PC98VID] Fix video driver settings

- Store settings in non hardware-profile registry key.
- Rename driver file to vgapnp.sys to keep in sync with VBE.
- This makes PC-98 video driver working again.

Addendum to 073a1ea3 and f03750de. CORE-18201 CORE-17977

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[PC98VID] Add framebuffer video miniport driver for NEC PC-98 series (#3040)

This adds generic graphics support on PC-9821.