device/azalia_device.c: Clarify comment

The `4` here doesn't have to do with the size of u32. Instead, it is
because the verb header contains the number of jacks, which is the
number of four-verb groups.

Change-Id: I3956ce5ec2a7abc29982504cf75b262a1c098af5
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48352
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>

src/device/azalia_device.c

@@ -115,7 +115,8 @@ u32 azalia_find_verb(const u32 *verb_table, u32 verb_table_bytes, u32 viddid, co
 	int idx = 0;
 
 	while (idx < (verb_table_bytes / sizeof(u32))) {
-		u32 verb_size = 4 * verb_table[idx + 2];	// in u32
+		/* Header contains the number of jacks, aka groups of 4 dwords */
+		u32 verb_size = 4 * verb_table[idx + 2];
 		if (verb_table[idx] != viddid) {
 			idx += verb_size + 3;	// skip verb + header
 			continue;