cah 5d615876ae feat: integrate LDPC decoder into Caravel wrapper ...

- Copy ldpc_decoder_core.sv and wishbone_interface.sv from standalone RTL
- Create Caravel-adapted ldpc_decoder_top.sv with USE_POWER_PINS,
  32-bit address (lower 8 bits passed through), and wb_sel_i port
- Replace user_proj_example in user_project_wrapper.v with LDPC decoder
  instantiation, active-high to active-low reset inversion, and tie-offs
  for unused outputs (la_data_out, io_out, io_oeb, user_irq[2:1])
- Update includes.rtl.caravel_user_project with LDPC RTL file list
- Fix invalid hex literal in VERSION_ID (0xLD -> 0x1D)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-02-25 18:22:45 -07:00

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