e7505: Move to per-device ACPI

Change-Id: I706891b9408cf14b559ef228766c04e98345ff6e
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/6938
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>