drm/i915/bios: Define VBT block 5 (Generic Mode Table)

Define the contents of VBT block 5 (Generic Mode Table).

Details were mostly gleaned from some VBIOS sources.

There are apparently two variants of the block: ALM only
vs. MGM, defined here as bdb_generic_mode_table_alm
and bdb_generic_mode_table_mgm. And those are the only two
platforms where I've seen this block.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-12-ville.syrjala@linux.intel.com
Acked-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ville Syrjälä 2024-05-03 15:24:25 +03:00
commit 2e8b807317