3.15-stable patches

3.15-stable patches

added patches:
	arc-fix-build-breakage-for-config_arc_dw2_unwind.patch
	btrfs-only-unlock-block-in-verify_parent_transid-if-we-locked-it.patch
	iio-of_iio_channel_get_by_name-returns-non-null-pointers-for-error-legs.patch
	irqchip-spear_shirq-fix-interrupt-offset.patch
	kvm-fix-wrong-address-when-writing-hyper-v-tsc-page.patch
	kvm-x86-increase-the-number-of-fixed-mtrr-regs-to-10.patch
	kvm-x86-preserve-the-high-32-bits-of-the-pat-register.patch
	md-flush-writes-before-starting-a-recovery.patch
	md-make-sure-get_array_info-ioctl-reports-correct-clean-status.patch
	mlx4_core-fix-incorrect-flags1-bitmap-test-in-mlx4_query_func_cap.patch
	net-mlx4_core-keep-only-one-driver-entry-release-mlx4_priv.patch
	nfsd-fix-rare-symlink-decoding-bug.patch
	staging-iio-ad7291-fix-error-code-in-ad7291_probe.patch
	staging-tidspbridge-fix-an-erroneous-removal-of-parentheses.patch
	tools-ffs-test-fix-header-values-endianess.patch
	tracing-remove-ftrace_stop-start-from-reading-the-trace-file.patch
	tracing-uprobes-fix-the-usage-of-uprobe_buffer_enable-in-probe_event_enable.patch
	tracing-uprobes-revert-support-mix-of-ftrace-and-perf.patch