meta-ampere: Cleanup for Yocto override syntax change

Run convert-overrides.py meta-ampere and update missing changes as
below:
- Change all _mtjade to :mtjade
- Change all _${PN} to :${PN}

Tested:
1. Check compilation without problem.
2. Check basic functions like switch UART mux, power control.

Signed-off-by: Thang Q. Nguyen <thang@os.amperecomputing.com>
Change-Id: I42038b2a98ed1951d6c770bdf49f5fc440f8163e
diff --git a/meta-ampere/meta-common/recipes-extended/rsyslog/rsyslog_%.bbappend b/meta-ampere/meta-common/recipes-extended/rsyslog/rsyslog_%.bbappend
index f667fb6..034ae3c 100644
--- a/meta-ampere/meta-common/recipes-extended/rsyslog/rsyslog_%.bbappend
+++ b/meta-ampere/meta-common/recipes-extended/rsyslog/rsyslog_%.bbappend
@@ -1,4 +1,4 @@
-FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
+FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
 
 SRC_URI += "file://rsyslog.conf \
             file://rsyslog.logrotate \
@@ -7,11 +7,11 @@
             file://rsyslog-override.conf \
            "
 
-FILES_${PN} += "${systemd_system_unitdir}/rsyslog.service.d/rsyslog-override.conf"
+FILES:${PN} += "${systemd_system_unitdir}/rsyslog.service.d/rsyslog-override.conf"
 
-PACKAGECONFIG_append = " imjournal"
+PACKAGECONFIG:append = " imjournal"
 
-do_install_append() {
+do_install:append() {
         install -m 0644 ${WORKDIR}/rotate-event-logs.service ${D}${systemd_system_unitdir}
         install -d ${D}${systemd_system_unitdir}/rsyslog.service.d
         install -m 0644 ${WORKDIR}/rsyslog-override.conf \
@@ -21,4 +21,4 @@
         rm ${D}${sysconfdir}/rsyslog.d/imjournal.conf
 }
 
-SYSTEMD_SERVICE_${PN} += " rotate-event-logs.service"
+SYSTEMD_SERVICE:${PN} += " rotate-event-logs.service"