ALSA: oxygen: add mute mask for the OXYGEN_PLAY_ROUTING register

The Xonar DG/DGX driver needs this mask to mute unnecessary
channels.

Signed-off-by: Roman Volkov <v1ron@mail.ru>
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>

authored by Roman Volkov and committed by Clemens Ladisch 079e0cb7 303cff30

+1
+1
sound/pci/oxygen/oxygen_regs.h
··· 318 #define OXYGEN_PLAY_MUTE23 0x0002 319 #define OXYGEN_PLAY_MUTE45 0x0004 320 #define OXYGEN_PLAY_MUTE67 0x0008 321 #define OXYGEN_PLAY_MULTICH_MASK 0x0010 322 #define OXYGEN_PLAY_MULTICH_I2S_DAC 0x0000 323 #define OXYGEN_PLAY_MULTICH_AC97 0x0010
··· 318 #define OXYGEN_PLAY_MUTE23 0x0002 319 #define OXYGEN_PLAY_MUTE45 0x0004 320 #define OXYGEN_PLAY_MUTE67 0x0008 321 + #define OXYGEN_PLAY_MUTE_MASK 0x000f 322 #define OXYGEN_PLAY_MULTICH_MASK 0x0010 323 #define OXYGEN_PLAY_MULTICH_I2S_DAC 0x0000 324 #define OXYGEN_PLAY_MULTICH_AC97 0x0010