Documentation/ABI: Add new attribute for mlxreg-io sysfs interfaces

Add documentation for the new attributes:
- Request and response for access to protetced flashes:
  "global_wp_request", "global_wp_response".
  Only for systems equipped with BMC - grant can be provided only by
  BMC in case its security policy allows to grant access.
- Request to unlock ASICs, which has been shutdown due-to ASIC thermal
  event: "shutdown_unlock".
- Data processor Units (DPU) boot progress: "boot_progress".
- DPU reset causes: "reset_aux_pwr_or_reload", "reset_dpu_thermal",
  "reset_from_main_board".
- Reset control for DPU components: "perst_rst", "phy_rst", "tpm_rst",
  "usbphy_rst".
- DPU Unified Fabric Manager upgrade - "ufm_upgrade".
- Hardware Id of Data Process Unit board - "dpu_id".

Reviewed-by: Michael Shych <michaelsh@nvidia.com>
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Link: https://lore.kernel.org/r/20250504165507.9003-3-vadimp@nvidia.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

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