intel/d945gclf: Fix IASL warning and remark

- Add an empty Operating Region for the empty _REG method
- Serialize _CRS Method
- Remove Kconfig default disabling IASL warnings as errors

dsdt.aml   1445:  Method (_CRS, 0)
Remark   2120 -             ^ Control Method should be made Serialized
(due to creation of named objects within)
dsdt.aml   1454:  Method (_REG, 2)
Warning  3079 -             ^ _REG has no corresponding Operation Region

Change-Id: I2b64609c929af62c2b699762206e5baf58fbdb8b
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: http://review.coreboot.org/12523
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2 files changed