meta-ingrasys: zaius: move all services to multi-user.target

Hard-code multi-user.target instead of SYSTEMD_DEFAULT_TARGET.

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: Ie7d145f53056ffbb6fa194d257b7158073c85278
diff --git a/meta-zaius/recipes-phosphor/gpio/phosphor-gpio-monitor_%.bbappend b/meta-zaius/recipes-phosphor/gpio/phosphor-gpio-monitor_%.bbappend
index 801b346..8e05153 100644
--- a/meta-zaius/recipes-phosphor/gpio/phosphor-gpio-monitor_%.bbappend
+++ b/meta-zaius/recipes-phosphor/gpio/phosphor-gpio-monitor_%.bbappend
@@ -4,7 +4,7 @@
 
 TMPL = "phosphor-gpio-presence@.service"
 INSTFMT = "phosphor-gpio-presence@{0}.service"
-TGT = "${SYSTEMD_DEFAULT_TARGET}"
+TGT = "multi-user.target"
 FMT = "../${TMPL}:${TGT}.requires/${INSTFMT}"
 
 SYSTEMD_LINK_${PN}-presence_append_zaius += "${@compose_list(d, 'FMT', 'PCIE_CARD_E2B_INSTANCE')}"