4.4-stable patches

4.4-stable patches

added patches:
	can-gs_usb-fix-return-value-of-the-set_bittiming-callback.patch
	ib-srpt-disable-rdma-access-by-the-initiator.patch
	kvm-vmx-scrub-hardware-gprs-at-vm-exit.patch
	mips-also-verify-sizeof-elf_fpreg_t-with-ptrace_setregset.patch
	mips-consistently-handle-buffer-counter-with-ptrace_setregset.patch
	mips-disallow-outsized-ptrace_setregset-nt_prfpreg-regset-accesses.patch
	mips-factor-out-nt_prfpreg-regset-access-helpers.patch
	mips-fix-an-fcsr-access-api-regression-with-nt_prfpreg-and-msa.patch
	mips-guard-against-any-partial-write-attempt-with-ptrace_setregset.patch
	mips-validate-pr_set_fp_mode-prctl-2-requests-against-the-abi-of-the-task.patch
	net-mac80211-debugfs.c-prevent-build-failure-with-config_ubsan-y.patch