[Linux-stable-mirror] objtool patches needed in v4.14.y (and possibly older kernels)

Hi Greg,

please add the following patches to v4.14.y.

ce90aaf5cde4 objtool: Fix seg fault with clang-compiled objects e7e83dd3ff1d objtool: Fix Clang enum conversion warning 0f908ccbeca9 tools/objtool/Makefile: don't assume sync-check.sh is executable d89e426499cf objtool: Fix seg fault caused by missing parameter

They are needed to avoid problems when building v4.14.y with clang. It might be useful to apply the same patches to older kernels if/when retpoline related changes are applied to those kernels.

Thanks, Guenter