powerpc: Enable overlayfs on pseries and ppc64 defconfigs

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/configs/ppc64_defconfig

@@ -290,6 +290,7 @@ CONFIG_BTRFS_FS_POSIX_ACL=y
 CONFIG_NILFS2_FS=m
 CONFIG_AUTOFS4_FS=m
 CONFIG_FUSE_FS=m
+CONFIG_OVERLAY_FS=m
 CONFIG_ISO9660_FS=y
 CONFIG_UDF_FS=m
 CONFIG_MSDOS_FS=y

arch/powerpc/configs/pseries_defconfig

@@ -242,6 +242,7 @@ CONFIG_BTRFS_FS_POSIX_ACL=y
 CONFIG_NILFS2_FS=m
 CONFIG_AUTOFS4_FS=m
 CONFIG_FUSE_FS=m
+CONFIG_OVERLAY_FS=m
 CONFIG_ISO9660_FS=y
 CONFIG_UDF_FS=m
 CONFIG_MSDOS_FS=y

arch/powerpc/configs/pseries_le_defconfig

@@ -243,6 +243,7 @@ CONFIG_BTRFS_FS_POSIX_ACL=y
 CONFIG_NILFS2_FS=m
 CONFIG_AUTOFS4_FS=m
 CONFIG_FUSE_FS=m
+CONFIG_OVERLAY_FS=m
 CONFIG_ISO9660_FS=y
 CONFIG_UDF_FS=m
 CONFIG_MSDOS_FS=y