alsa-state: add support for ccimx8mn platform

https://jira.digi.com/browse/DEL-6911

Signed-off-by: Arturo Buzarra <arturo.buzarra@digi.com>

meta-digi-arm/recipes-bsp/alsa-state/alsa-state.bbappend

@@ -1,4 +1,4 @@
-# Copyright (C) 2013-2018 Digi International.
+# Copyright (C) 2013-2020 Digi International.
 
 FILESEXTRAPATHS_prepend := "${THISDIR}/${BPN}:"
 
@@ -11,8 +11,8 @@ SRC_URI_append_ccimx6 = " \
 "
 
 SRC_URI_append_ccimx6ul = " file://asound.state"
-
 SRC_URI_append_ccimx8x = " file://asound.state"
+SRC_URI_append_ccimx8m = " file://asound.state"
 
 do_install_append_ccimx6() {
 	ln -sf asound.micro_play.state ${D}${localstatedir}/lib/alsa/asound.state

meta-digi-arm/recipes-bsp/alsa-state/alsa-state/ccimx8mn/asound.conf

@@ -0,0 +1,9 @@
+pcm.imxmax98088 {
+    type hw
+    card 0
+}
+ctl.imxmax98088 {
+    type hw
+    card 0
+}
+ctl.!default imxmax98088