meta-asrock: Deduplicate common platform configuration

All existing ASRock platforms use most of the same core packages
(entity-manager, dbus-sensors, x86-power-control, phosphor-ipmi-kcs...),
so we might as well define it all in one place instead of duplicating it
for each machine.

Signed-off-by: Zev Weiss <zev@bewilderbeest.net>
Change-Id: Ife82b12cf909de6bdd770943adb30327a22438e1
diff --git a/meta-asrock/meta-romed8hm3/conf/machine/romed8hm3.conf b/meta-asrock/meta-romed8hm3/conf/machine/romed8hm3.conf
index 8ff4d77..ea5e2b5 100644
--- a/meta-asrock/meta-romed8hm3/conf/machine/romed8hm3.conf
+++ b/meta-asrock/meta-romed8hm3/conf/machine/romed8hm3.conf
@@ -8,14 +8,4 @@
 
 require conf/machine/include/ast2500.inc
 require conf/machine/include/obmc-bsp-common.inc
-
-PREFERRED_PROVIDER_virtual/obmc-fan-mgmt = "packagegroup-asrock-apps"
-PREFERRED_PROVIDER_virtual/obmc-chassis-mgmt = "packagegroup-asrock-apps"
-PREFERRED_PROVIDER_virtual/obmc-flash-mgmt = "packagegroup-asrock-apps"
-PREFERRED_PROVIDER_virtual/obmc-system-mgmt = "packagegroup-asrock-apps"
-
-VIRTUAL-RUNTIME_obmc-inventory-manager = "entity-manager"
-VIRTUAL-RUNTIME_obmc-sensors-hwmon = "dbus-sensors"
-
-VIRTUAL-RUNTIME_obmc-host-state-manager = "x86-power-control"
-VIRTUAL-RUNTIME_obmc-chassis-state-manager = "x86-power-control"
+require conf/machine/include/asrock.inc