ibase/mb899: Fix IASL warning and remark

- Add an empty Operating Region for the empty _REG method
- Move Named objects out of _CRS Method
- Remove Kconfig default disabling IASL warnings as errors

Fixes these items:
dsdt.aml 1449:  Method (_CRS, 0)
Remark   2120 -           ^ Control Method should be made Serialized
(due to creation of named objects within)
dsdt.aml 1458: Method (_REG, 2)
Warning  3079 -          ^ _REG has no corresponding Operation Region

Change-Id: I801a84468097687c91d6ee3f44cec06243355fac
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/12531
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2 files changed