Merge 4.4.153 into kernel.lnx.4.4.r27-rel

Changes in 4.4.153: (6 commits)
        x86/mm/pat: Fix L1TF stable backport for CPA
        x86/mm: Fix use-after-free of ldt_struct
        ovl: Ensure upper filesystem supports d_type
        ovl: Do d_type check only if work dir creation was successful
        ovl: warn instead of error if d_type is not supported
        Linux 4.4.153

Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>