Merge pull request #2501 from shenki/buildroot-2018.11

Buildroot 2018.11
diff --git a/buildroot b/buildroot
index fe05987..511fa2a 160000
--- a/buildroot
+++ b/buildroot
@@ -1 +1 @@
-Subproject commit fe059872d730182e36454f00f0c3d2f9a78ca761
+Subproject commit 511fa2a7990d17975a1e0b8b083557c4da574f7e
diff --git a/openpower/package/machine-xml/Config.in b/openpower/package/machine-xml/Config.in
index 3dedcfd..c1064d7 100755
--- a/openpower/package/machine-xml/Config.in
+++ b/openpower/package/machine-xml/Config.in
@@ -4,7 +4,6 @@
         bool "machine_xml"
         default y if (BR2_OPENPOWER_PLATFORM)
         select BR2_PACKAGE_COMMON_P8_XML if (BR2_OPENPOWER_POWER8)
-        help
 
 choice
 	prompt "Machine XML location"
diff --git a/openpower/package/openpower-pnor/Config.in b/openpower/package/openpower-pnor/Config.in
index a673e2b..2fe0b9d 100644
--- a/openpower/package/openpower-pnor/Config.in
+++ b/openpower/package/openpower-pnor/Config.in
@@ -78,7 +78,7 @@
             String used to define skiboot lid filename
 
 config BR2_TARGET_SKIBOOT_XZ
-        boolean "Compress the skiboot image with XZ"
+        bool "Compress the skiboot image with XZ"
         select BR2_OPENPOWER_PNOR_XZ_ENABLED
         default y