looks like it's added on 1.0.29, not sure about USB Soundblaster HD

Update alsa-lib-USB_Soundblaster_HD.patch

packages/audio/alsa-lib/patches/alsa-lib-USB_Soundblaster_HD.patch

@@ -0,0 +1,23 @@
+From 982c628f484266c8db4f70dc1e856bc7844c1873 Mon Sep 17 00:00:00 2001
+From: Patrick Rasmussen <patrickrasmussen1988@gmail.com>
+Date: Fri, 13 Mar 2015 14:52:56 +0100
+Subject: [PATCH] Add USB Sound Blaster HD
+
+---
+ src/conf/cards/USB-Audio.conf | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/conf/cards/USB-Audio.conf b/src/conf/cards/USB-Audio.conf
+index 4cbf85e..2591d00 100644
+--- a/src/conf/cards/USB-Audio.conf
++++ b/src/conf/cards/USB-Audio.conf
+@@ -62,6 +62,7 @@ USB-Audio.pcm.iec958_device {
+ # Second iec958 device number, if any.
+ USB-Audio.pcm.iec958_2_device {
+ 	"PHIREE U2" 1  # 0 = PCM S/PDIF, 1 = non-PCM S/PDIF
++	"USB Sound Blaster HD" 1
+ }
+ 
+ 
+-- 
+2.1.4

packages/audio/alsa-lib/patches/alsa-lib-usb-audio-spdif.patch

@@ -1,69 +0,0 @@
-From 01b686cf032d523642c5ab33f455d814ef468925 Mon Sep 17 00:00:00 2001
-From: fritsch <Peter.Fruehberger@gmail.com>
-Date: Sat, 10 Jan 2015 23:47:58 +0100
-Subject: [PATCH] Support PHIREE U2 and Sound blaster F-Xi HD (done by Anssih)
-
----
- src/conf/cards/USB-Audio.conf | 41 ++++++++++++++++++++++++++++++++++++++++-
- 1 file changed, 40 insertions(+), 1 deletion(-)
-
-diff --git a/src/conf/cards/USB-Audio.conf b/src/conf/cards/USB-Audio.conf
-index ce3ae01..107d6fa 100644
---- a/src/conf/cards/USB-Audio.conf
-+++ b/src/conf/cards/USB-Audio.conf
-@@ -52,6 +52,10 @@ USB-Audio.pcm.iec958_device {
- 	"USB Device 0x46d:0x992" 999
- }
- 
-+USB-Audio.pcm.iec958_2_device {
-+	"PHIREE U2" 1
-+	"USB Sound Blaster HD" 1
-+}
- 
- # If a device requires non-standard definitions for front, surround40,
- # surround51, surround71 or iec958, they can be defined here.
-@@ -422,4 +426,39 @@ USB-Audio.pcm.iec958.0 {
- 	}
- }
- 
--# vim: ft=alsaconf
-+USB-Audio.pcm.iec958.1 {
-+	@args [ CARD AES0 AES1 AES2 AES3 ]
-+	@args.CARD { type string }
-+	@args.AES0 { type integer }
-+	@args.AES1 { type integer }
-+	@args.AES2 { type integer }
-+	@args.AES3 { type integer }
-+	@func refer
-+	name {
-+		@func concat
-+		strings [
-+			"cards.USB-Audio."
-+			{ @func card_name card $CARD }
-+			".pcm.iec958_2:CARD=" $CARD
-+			",AES0=" $AES0 ",AES1=" $AES1 ",AES2=" $AES2 ",AES3=" $AES3
-+		]
-+	}
-+	default {
-+		# FIXME: we cannot set the AES parameters
-+		type hw
-+		card $CARD
-+		device {
-+			@func refer
-+			name {
-+				@func concat
-+				strings [
-+					"cards.USB-Audio.pcm.iec958_2_device."
-+					{ @func card_name card $CARD }
-+				]
-+			}
-+			default 999
-+		}
-+	}
-+}
-+
-+# vim: ft=alsaconf
-\ No newline at end of file
--- 
-1.9.1
-