Claude review: accel/ivpu: Remove disable_d0i3_msg workaround

[Claude Code Review Bot <claude-review@example.com>]

Overall Series Review

Subject: accel/ivpu: Remove disable_d0i3_msg workaround
Author: Andrzej Kacprowski <andrzej.kacprowski@linux.intel.com>
Patches: 2
Reviewed: 2026-05-27T14:51:17.107370

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This is a single, well-scoped cleanup patch that removes the `disable_d0i3_msg` workaround from the Intel VPU (NPU) accelerator driver. The rationale is clear: all published firmware versions support D0i3 delayed entry, and newer firmware has dropped the legacy path entirely, making the workaround dead code.

The patch is **straightforward and correct**. All references to the workaround are consistently removed across all four files — the workaround flag in the WA table, the test mode bits, the initialization function, the conditional in boot params setup, and the early-return guard in the JSM D0i3 entry path. The `d0i3_delayed_entry` boot param is now unconditionally set to 1, which is the safe/correct value for all supported firmware.

The patch also bumps the boot API patch version (4 → 5) and updates the documentation comment for the `d0i3_delayed_entry` field to note deprecation on NPU50xx+, which is a good practice.

**No bugs or issues found.** This is a clean removal of dead code with no functional concerns.

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