ALSA: intelhdmi - add id for the CougarPoint chipset

Add id for Intel CougarPoint HDMI audio codec.

CougarPoint provides 3 Audio Converters.
Increase MAX_HDMI_CVTS/MAX_HDMI_PINS accordingly.

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>