pulseaudio: only install hdmi_hotplug.sh for ccimx6 platforms

The ccimx6ul or ccardimx28 do not have hdmi interface, so do not install the
hdmi hotplug script.

https://jira.digi.com/browse/DEL-2654

Signed-off-by: Isaac Hermida <isaac.hermida@digi.com>

meta-digi-dey/recipes-multimedia/pulseaudio/pulseaudio_%.bbappend

@@ -1,11 +1,11 @@
 FILESEXTRAPATHS_prepend := "${THISDIR}/${BPN}:"
 
-SRC_URI += "file://hdmi_hotplug.sh"
+SRC_URI_append_ccimx6 = " file://hdmi_hotplug.sh"
 
 # Do not include module-udev-detect so that module-detect is used instead
 RDEPENDS_pulseaudio-server_remove = "pulseaudio-module-udev-detect"
 
-do_install_append() {
+do_install_append_ccimx6() {
 	install -d ${D}${sysconfdir}/udev/scripts
 	install -m 0755 ${WORKDIR}/hdmi_hotplug.sh ${D}${sysconfdir}/udev/scripts
 
@@ -14,3 +14,5 @@ do_install_append() {
 		SUBSYSTEM=="platform", KERNEL=="*hdmi_video", ACTION=="change", RUN+="/etc/udev/scripts/hdmi_hotplug.sh"
 	_EOL_
 }
+
+PACKAGE_ARCH = "${MACHINE_ARCH}"