fix typo after a recent commit causing headphones to have no sound
Fixes: ad43d528a7ac (ALSA: usb-audio: Define registers for CM6206)
Signed-off-by: Amadeusz Sławiński <amade@asmblr.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
                 * REG1: PLL binary search enable, soft mute enable.
                 */
                CM6206_REG1_PLLBIN_EN |
-               CM6206_REG1_SOFT_MUTE_EN |
+               CM6206_REG1_SOFT_MUTE_EN,
                /*
                 * REG2: enable output drivers,
                 * select front channels to the headphone output,