meta-ampere: fix compilation error with latest Yocto

Make the following changes to fix compilation errors:
1. Add honister to LAYERSERIES_COMPAT
2. Increase CONF_VERSION to 2.
3. Fix mistake on previous change on Yocto syntax update.

Tested:
1. Compile OpenBMC for Mt.Jade without error.

Signed-off-by: Thang Q. Nguyen <thang@os.amperecomputing.com>
Change-Id: I5ac3f568d776109955759fab78844b1d38a51af1
diff --git a/meta-ampere/meta-jade/recipes-ampere/platform/mtjade-gpio-config.bb b/meta-ampere/meta-jade/recipes-ampere/platform/mtjade-gpio-config.bb
index 8886fec..cc79f5b 100644
--- a/meta-ampere/meta-jade/recipes-ampere/platform/mtjade-gpio-config.bb
+++ b/meta-ampere/meta-jade/recipes-ampere/platform/mtjade-gpio-config.bb
@@ -28,14 +28,14 @@
 CHASSIS_POWERON_INSTMPL = "ampere-gpio-poweron@{0}.service"
 CHASSIS_POWERON_TGTFMT = "obmc-chassis-poweron@{0}.target"
 CHASSIS_POWERON_FMT = "../${CHASSIS_POWERON_SVC}:${CHASSIS_POWERON_TGTFMT}.requires/${CHASSIS_POWERON_INSTMPL}"
-SYSTEMD_LINK:${PN} += "${@compose_list_zip(d, 'CHASSIS_POWERON_FMT', 'OBMC_CHASSIS_INSTANCES')}"
+SYSTEMD_LINK_${PN} += "${@compose_list_zip(d, 'CHASSIS_POWERON_FMT', 'OBMC_CHASSIS_INSTANCES')}"
 
 # chassis power off
 CHASSIS_POWEROFF_SVC = "ampere-gpio-poweroff@.service"
 CHASSIS_POWEROFF_INSTMPL = "ampere-gpio-poweroff@{0}.service"
 CHASSIS_POWEROFF_TGTFMT = "obmc-chassis-poweroff@{0}.target"
 CHASSIS_POWEROFF_FMT = "../${CHASSIS_POWEROFF_SVC}:${CHASSIS_POWEROFF_TGTFMT}.requires/${CHASSIS_POWEROFF_INSTMPL}"
-SYSTEMD_LINK:${PN} += "${@compose_list_zip(d, 'CHASSIS_POWEROFF_FMT', 'OBMC_CHASSIS_INSTANCES')}"
+SYSTEMD_LINK_${PN} += "${@compose_list_zip(d, 'CHASSIS_POWEROFF_FMT', 'OBMC_CHASSIS_INSTANCES')}"
 
 do_install() {
     install -d ${D}/usr/sbin