drm/amdgpu/atomfirmware: Add LpDDR5x and new fields for info v2_3
[Why]
Newer DCN bandwidth calculations require new definitions.
[How]
Add new fields cpu_id and vram_bit_width for
atom_integrated_system_info_v2_3, and add a memtype for LpDDR5x.
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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