meta-hpe: rl300-g11 update machine config file

add missing preferred provider for obmc-host-ipmi-hw

Change-Id: I06c79cf0633df0a296841bd3acb99d72e88b9bbe
Signed-off-by: Charles Kearney <charles.kearney@hpe.com>
diff --git a/meta-hpe/meta-rl300-g11/conf/machine/rl300-g11.conf b/meta-hpe/meta-rl300-g11/conf/machine/rl300-g11.conf
index d451347..ad6922a 100644
--- a/meta-hpe/meta-rl300-g11/conf/machine/rl300-g11.conf
+++ b/meta-hpe/meta-rl300-g11/conf/machine/rl300-g11.conf
@@ -4,3 +4,4 @@
 require conf/machine/include/obmc-bsp-common.inc
 require conf/machine/include/hpe.inc
 
+PREFERRED_PROVIDER_virtual/obmc-host-ipmi-hw = "phosphor-ipmi-ssif"