4.16-stable patches

4.16-stable patches

added patches:
	ext2-fix-a-block-leak.patch
	powerpc-64s-add-support-for-a-store-forwarding-barrier-at-kernel-entry-exit.patch
	powerpc-64s-enhance-the-information-in-cpu_show_meltdown.patch
	powerpc-64s-move-cpu_show_meltdown.patch
	powerpc-64s-wire-up-cpu_show_spectre_v1.patch
	powerpc-64s-wire-up-cpu_show_spectre_v2.patch
	powerpc-add-security-feature-flags-for-spectre-meltdown.patch
	powerpc-move-default-security-feature-flags.patch
	powerpc-powernv-set-or-clear-security-feature-flags.patch
	powerpc-powernv-use-the-security-flags-in-pnv_setup_rfi_flush.patch
	powerpc-pseries-add-new-h_get_cpu_characteristics-flags.patch
	powerpc-pseries-fix-clearing-of-security-feature-flags.patch
	powerpc-pseries-set-or-clear-security-feature-flags.patch
	powerpc-pseries-use-the-security-flags-in-pseries_setup_rfi_flush.patch
	powerpc-rfi-flush-always-enable-fallback-flush-on-pseries.patch
	s390-add-assembler-macros-for-cpu-alternatives.patch
	s390-add-automatic-detection-of-the-spectre-defense.patch
	s390-add-sysfs-attributes-for-spectre.patch
	s390-correct-module-section-names-for-expoline-code-revert.patch
	s390-correct-nospec-auto-detection-init-order.patch
	s390-crc32-vx-use-expoline-for-indirect-branches.patch
	s390-extend-expoline-to-bc-instructions.patch
	s390-ftrace-use-expoline-for-indirect-branches.patch
	s390-kernel-use-expoline-for-indirect-branches.patch
	s390-lib-use-expoline-for-indirect-branches.patch
	s390-move-expoline-assembler-macros-to-a-header.patch
	s390-move-nobp-parameter-functions-to-nospec-branch.c.patch
	s390-move-spectre-sysfs-attribute-code.patch
	s390-report-spectre-mitigation-via-syslog.patch
	s390-use-expoline-thunks-in-the-bpf-jit.patch