ALSA: usb-audio: Change structure initialisation to C99 style

To allow for structure randomisation, replace the in order struct
initialisation style with explicit field style.

The Coccinelle semantic patch used to make this change is as follows:

@decl@
identifier i1,fld;
type T;
field list[n] fs;
@@

struct i1 {
 fs
 T fld;
 ...};

@@
identifier decl.i1,i2,decl.fld;
expression e;
position bad.p, bad.fix;
@@

struct i1 i2@p = { ...,
+ .fld = e
- e@fix
 ,...};

Signed-off-by: Amitoj Kaur Chawla <[email protected]>
Signed-off-by: Takashi Iwai <[email protected]>

sound/usb/mixer_maps.c

@@ -107,8 +107,10 @@ static struct usbmix_name_map extigy_map[] = {
  * e.g. no Master and fake PCM volume
  *			Pavel Mihaylov <[email protected]>
  */
-static struct usbmix_dB_map mp3plus_dB_1 = {-4781, 0};	/* just guess */
-static struct usbmix_dB_map mp3plus_dB_2 = {-1781, 618}; /* just guess */
+static struct usbmix_dB_map mp3plus_dB_1 = {.min = -4781, .max = 0};
+						/* just guess */
+static struct usbmix_dB_map mp3plus_dB_2 = {.min = -1781, .max = 618};
+						/* just guess */
 
 static struct usbmix_name_map mp3plus_map[] = {
 	/* 1: IT pcm */