UCM2: Intel: sof-hda-dsp: Fix handling of empty sys_vendor string

alsa-project/alsa-ucm-conf pull request #463 was opened from singalsu:

The mistake in UCM syntax caused in alsaucm start error:

ALSA lib ucm_cond.c:367:(if_eval) unknown If.Condition.Type

Fixes: 13022a97711d ("sof-hda-dsp: Fix the case where sysfs dmi sys_vendor attribute is not set")

Request URL : https://github.com/alsa-project/alsa-ucm-conf/pull/463 Patch URL : https://github.com/alsa-project/alsa-ucm-conf/pull/463.patch Repository URL: https://github.com/alsa-project/alsa-ucm-conf