meta-ibm: Change fan watchdog dep to .wants

Change the power-on dependency of the fan watch and fan watchdog reset
services to a wants instead of requires so the system isn't powered off
if they were to fail with power on.

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: I603747083567c1b3335c640b70da97ed7fac5332
diff --git a/meta-ibm/recipes-phosphor/fans/fan-watchdog.bb b/meta-ibm/recipes-phosphor/fans/fan-watchdog.bb
index 4673c44..8f99b24 100644
--- a/meta-ibm/recipes-phosphor/fans/fan-watchdog.bb
+++ b/meta-ibm/recipes-phosphor/fans/fan-watchdog.bb
@@ -10,12 +10,12 @@
 
 RESET_SERVICE = "reset-fan-watchdog.service"
 TGTFMT = "obmc-chassis-poweron@0.target"
-RESET_FMT = "../${RESET_SERVICE}:${TGTFMT}.requires/${RESET_SERVICE}"
+RESET_FMT = "../${RESET_SERVICE}:${TGTFMT}.wants/${RESET_SERVICE}"
 
 MONITOR_SERVICE = "fan-watchdog-monitor@.service"
 
 WATCHDOG_SERVICE = "fan-watchdog.service"
-WATCHDOG_FMT = "../${WATCHDOG_SERVICE}:${TGTFMT}.requires/${WATCHDOG_SERVICE}"
+WATCHDOG_FMT = "../${WATCHDOG_SERVICE}:${TGTFMT}.wants/${WATCHDOG_SERVICE}"
 
 SYSTEMD_SERVICE:${PN} += "${RESET_SERVICE} ${MONITOR_SERVICE} ${WATCHDOG_SERVICE}"
 SYSTEMD_LINK:${PN} += "${RESET_FMT} ${WATCHDOG_FMT}"