ACPI: tables: Improve logging around acpi_initialize_tables()

Emit a warning that includes return code in a readable format. Example:

  ACPI: Failed to initialize tables, status=0x5 (AE_NOT_FOUND)

No other functional changes intended.

Signed-off-by: Bartosz Szczepanek <bsz@amazon.de>
Link: https://patch.msgid.link/20250423085637.38658-1-bsz@amazon.de


[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>