Add SDI print support for CH32H41x

[maximeborges]

Summary

Enables wlink sdi-print for the CH32H41x family (CH32H415/H416/H417). The chip already has flashing/chip-id/alias support (added in #), but SDI print was gated off: RiscvChip::support_sdi_print() listed every SDI-capable family except CH32H41x, so wlink sdi-print enable --chip CH32H41X failed with "Chip doesn't support SDI print functionality".

This adds CH32H41X to that match, plus a unit test and a changelog entry.

Changes

• src/lib.rs: add RiscvChip::CH32H41X to support_sdi_print().
• src/lib.rs: add unit test ch32h41x_supports_sdi_print.
• CHANGELOG.md: note under [Unreleased].

Testing

• cargo test passes (incl. the new test).

• Verified end-to-end on hardware: CH32H417QEU (ChipID 0x4170052d), WCH-LinkE (RV mode, firmware v2.18). After wlink sdi-print enable --chip CH32H41X, printf() output streamed out the WCH-Link CDC serial port at 115200 with no UART wiring:

  SystemClk:400000000
  V3F SystemCoreClk:100000000
  SDI print test 0
  SDI print test 1
  ...

Firmware-side note

SDI print requires the firmware to write to the memory-mapped Debug Module data registers DATA0/DATA1. Their address is chip-specific: 0xE0000000 + hartinfo.dataaddr. On the CH32H417 hartinfo (DMI 0x12) reads 0x00212340 → DATA0/DATA1 @ 0xE0000340/0xE0000344 — not the CH32V-series 0xE0000380.

A minimal, verified example is here: openwch/ch32h417#13 (cf. the ch32v003 SDI_Printf example already referenced in src/main.rs).