Lowercase characters are not valid ACPI identifiers.
BUG=b:184766519
TEST=Boot picasso to OS and verify ACPI errors are no longer printed.
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I75aca67f4607e97ced8ac00ac68e51c359aff944
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54027
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-by: Jason Glenesk <jason.glenesk@gmail.com>