zz: Don't build openpower specific packages

Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
diff --git a/openpower/configs/zz_defconfig b/openpower/configs/zz_defconfig
index fdbefdd..cae39b1 100644
--- a/openpower/configs/zz_defconfig
+++ b/openpower/configs/zz_defconfig
@@ -45,6 +45,7 @@
 # BR2_PACKAGE_OPENPOWER_PNOR is not set
 BR2_OPENPOWER_CONFIG_NAME="openpower-firenze"
 # BR2_TARGET_SKIBOOT_XZ is not set
+# BR2_BUILD_PNOR_SQUASHFS is not set
 BR2_PACKAGE_PETITBOOT=y
 BR2_PACKAGE_PETITBOOT_MTD=y
 # BR2_PACKAGE_HOST_P8_PORE_BINUTILS is not set
@@ -54,3 +55,5 @@
 # BR2_PACKAGE_HOST_PPE42_BINUTILS is not set
 # BR2_PACKAGE_HOST_PPE42_GCC is not set
 # BR2_PACKAGE_IMA_CATALOG is not set
+# BR2_PACKAGE_SBE is not set
+# BR2_PACKAGE_HOST_SB_SIGNING_UTILS is not set