procd: properly set /dev/snd permission and group

Signed-off-by: John Crispin <john@phrozen.org>

package/system/procd/Makefile

@@ -8,14 +8,14 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=procd
-PKG_VERSION:=2016-06-17
+PKG_VERSION:=2016-06-20
 
 PKG_RELEASE=$(PKG_SOURCE_VERSION)
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL=$(LEDE_GIT)/project/procd.git
 PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
-PKG_SOURCE_VERSION:=7104a2b149f0a870ec36ddff90b5f6a22c0d398d
+PKG_SOURCE_VERSION:=4d73a369b7c6b17a0e342b770afece8775c9d252
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.gz
 CMAKE_INSTALL:=1
 

package/system/procd/files/hotplug.json

@@ -31,6 +31,10 @@
 							[ "return" ],
 						],
 					],
+					[ "if",
+						[ "regex", "DEVNAME", "^snd" ],
+						[ "makedev", "/dev/%DEVNAME%", "0660", "audio" ],
+					],
 					[ "if",
 						[ "regex", "DEVNAME", "^ttyS" ],
 						[ "makedev", "/dev/%DEVNAME%", "0664" ],