mixer: show BYTE controls

Use existing routines to read BYTE controls. Somewhat inefficient
since an ioctl is done for every byte, some caching in intermediate
fields would be beneficial.

mixer.c

@@ -306,6 +306,9 @@ int mixer_ctl_get_value(struct mixer_ctl *ctl, unsigned int id)
     case SNDRV_CTL_ELEM_TYPE_ENUMERATED:
         return ev.value.enumerated.item[id];
 
+    case SNDRV_CTL_ELEM_TYPE_BYTES:
+        return ev.value.bytes.data[id];
+
     default:
         return -EINVAL;
     }

tinymix.c

@@ -140,6 +140,9 @@ static void tinymix_detail_control(struct mixer *mixer, unsigned int id,
         case MIXER_CTL_TYPE_ENUM:
             tinymix_print_enum(ctl, print_all);
             break;
+         case MIXER_CTL_TYPE_BYTE:
+            printf(" 0x%02x", mixer_ctl_get_value(ctl, i));
+            break;
         default:
             printf(" unknown");
             break;