meta-phosphor: Add a hint for ipmi whitelists

Add additional providers with whitelists to distro or machine
configuration and not in recipe context (bbappend) otherwise ipmid will
not know about whitelists.

Change-Id: I29e747c980857e670380a76d331ea00db53d610a
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/recipes-phosphor/packagegroups/packagegroup-obmc-ipmid-providers.bb b/recipes-phosphor/packagegroups/packagegroup-obmc-ipmid-providers.bb
index 265abac..5892c23 100644
--- a/recipes-phosphor/packagegroups/packagegroup-obmc-ipmid-providers.bb
+++ b/recipes-phosphor/packagegroups/packagegroup-obmc-ipmid-providers.bb
@@ -8,3 +8,7 @@
 
 SUMMARY_${PN}-libs = "Extra providers for ipmid."
 RDEPENDS_${PN}-libs = "${VIRTUAL-RUNTIME_phosphor-ipmi-providers}"
+
+# Warning.  Add additional providers with whitelists to distro or machine
+# configuration and not in recipe context (bbappend) otherwise ipmid will not
+# know about your whitelist.