fsp_rangeley: Switch to per-device ACPI

Change-Id: Ic8b2204a6d08d63ac7f05836bf1424f1ca6ee50e
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/7046
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins)