Add GPIO Presence

Add the GPIO Presence service file and needed Witherspoon
conf files for power supply GPIO presence detection.

Resolves openbmc/openbmc#1329

Change-Id: Ie8d5e3e6c2bda1c85fd10a4cffacfdd7ce9840ae
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/meta-witherspoon/recipes-phosphor/fans/witherspoon-fan-watchdog.bb b/meta-witherspoon/recipes-phosphor/fans/witherspoon-fan-watchdog.bb
index 1fdca17..c09b9df 100644
--- a/meta-witherspoon/recipes-phosphor/fans/witherspoon-fan-watchdog.bb
+++ b/meta-witherspoon/recipes-phosphor/fans/witherspoon-fan-watchdog.bb
@@ -4,7 +4,7 @@
 inherit obmc-phosphor-license
 inherit obmc-phosphor-systemd
 
-RDEPENDS_${PN} += "phosphor-gpio-monitor"
+RDEPENDS_${PN} += "virtual/obmc-gpio-monitor"
 RDEPENDS_${PN} += "busybox"
 
 RESET_SERVICE = "witherspoon-reset-fan-watchdog.service"