Coverity detects dereferencing pointers that might be "NULL" when
calling acpigen_write_scope and acpigen_write_device. Add sanity
check for both of scope and name to prevent NULL pointer dereference.
Found-by: Coverity CID 1429981
TEST=Built and boot up to kernel.
Signed-off-by: John Zhao <john.zhao@intel.com>
Change-Id: Iea3801585e8c294fb889a8137b534bb932696025
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42836
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>