alsa_driver: refactor struct member position for readability

linux/alsa/alsa_driver.h

@@ -58,13 +58,19 @@ typedef struct _alsa_driver {
 
     JACK_DRIVER_NT_DECL
 
+    snd_pcm_format_t              playback_sample_format;
+    snd_pcm_format_t              capture_sample_format;
+    const snd_pcm_channel_area_t *capture_areas;
+    const snd_pcm_channel_area_t *playback_areas;
+    snd_pcm_hw_params_t          *playback_hw_params;
+    snd_pcm_sw_params_t          *playback_sw_params;
+    snd_pcm_hw_params_t          *capture_hw_params;
+    snd_pcm_sw_params_t          *capture_sw_params;
     int                           poll_timeout;
     jack_time_t                   poll_last;
     jack_time_t                   poll_next;
     char                        **playback_addr;
     char                        **capture_addr;
-    const snd_pcm_channel_area_t *capture_areas;
-    const snd_pcm_channel_area_t *playback_areas;
     struct pollfd                *pfd;
     unsigned int                  playback_nfds;
     unsigned int                  capture_nfds;
@@ -88,8 +94,6 @@ typedef struct _alsa_driver {
     char                         *alsa_driver;
     bitset_t			  channels_not_done;
     bitset_t			  channels_done;
-    snd_pcm_format_t              playback_sample_format;
-    snd_pcm_format_t              capture_sample_format;
     float                         max_sample_val;
     unsigned long                 user_nperiods;
     unsigned int                  playback_nperiods;
@@ -98,10 +102,6 @@ typedef struct _alsa_driver {
     snd_ctl_t                    *ctl_handle;
     snd_pcm_t                    *playback_handle;
     snd_pcm_t                    *capture_handle;
-    snd_pcm_hw_params_t          *playback_hw_params;
-    snd_pcm_sw_params_t          *playback_sw_params;
-    snd_pcm_hw_params_t          *capture_hw_params;
-    snd_pcm_sw_params_t          *capture_sw_params;
     jack_hardware_t              *hw;
     ClockSyncStatus              *clock_sync_data;
     jack_client_t                *client;