[mustang] enable _DSD for ethernet nic in ACPI

From: Tuan Phan <tphan@apm.com>

Create a _DSD entry in the DSDT for the ethernet nic
and remove old, non-standard entries.

Tested-by: Mark Langsdorf <mlangsdo@redhat.com>
Signed-off-by: Tuan Phan <tphan@apm.com>
[mustang] DSDT cleanup

Signed-off-by: Mark Langsdorf <mlangsdo@redhat.com>