meta-evb-aspeed: Add note about passwords

Signed-off-by: Joel Stanley <joel@jms.id.au>
Change-Id: If575e370e4ee930a46e85bd9cdebd0b0c80bf35c
diff --git a/meta-evb/meta-evb-aspeed/meta-evb-ast2600/conf/templates/default/conf-notes.txt b/meta-evb/meta-evb-aspeed/meta-evb-ast2600/conf/templates/default/conf-notes.txt
index a73afd7..4e85e10 100644
--- a/meta-evb/meta-evb-aspeed/meta-evb-ast2600/conf/templates/default/conf-notes.txt
+++ b/meta-evb/meta-evb-aspeed/meta-evb-ast2600/conf/templates/default/conf-notes.txt
@@ -6,3 +6,5 @@
 
      core-image-full-cmdline: A small image with more Linux functionality
                               installed, including a ssh server.
+
+Note that the core targets will not set the default phosphor password.