Revision 446476

MFH: r446371

- Fix volume control for TPB by correcting typing error:
replace wrong "dec.acpi_ibm.0.volume" with right "dev.acpi_ibm.0.volume"
- assign submitter as maintainer for this unmaintained port
- bump PORTREVISION.

PR:		220900
Submitted by:	Dmitry Luhtionov
Approved by:	az (mentor)
Approved by:	ports-secteam