ucm: fix handling of cset with spaces in the control name
ucm: fix handling of cset with spaces in the control name

Always terminate the cset command based on the last space found within the
cset command since the control name may contain spaces.

Distrotech/alsa-lib,tiwai/alsa-lib,lgirdwood/alsa-lib,lgirdwood/alsa-lib,takaswie/alsa-lib,zedongchen/alsa-lib,mikelima/alsa-lib,takaswie/alsa-lib,mengdonglin/alsa-lib,alsa-project/alsa-lib,takaswie/alsa-lib,takaswie/alsa-lib,lgirdwood/alsa-lib,tiwai/alsa-lib,zedongchen/alsa-lib,Distrotech/alsa-lib,Distrotech/alsa-lib,zedongchen/alsa-lib,mikelima/alsa-lib,mengdonglin/alsa-lib,Distrotech/alsa-lib,Distrotech/alsa-lib,mengdonglin/alsa-lib,zedongchen/alsa-lib,alsa-project/alsa-lib,mengdonglin/alsa-lib,tiwai/alsa-lib,lgirdwood/alsa-lib,tiwai/alsa-lib,lgirdwood/alsa-lib,mikelima/alsa-lib,mikelima/alsa-lib,alsa-project/alsa-lib,zedongchen/alsa-lib,alsa-project/alsa-lib,mikelima/alsa-lib,mengdonglin/alsa-lib,takaswie/alsa-lib