CVE-2026-43477 drm/i915/vrr: Configure VRR timings after enabling TRANS_DDI_FUNC_CTL

In the Linux kernel, the following vulnerability has been resolved: drm/i915/vrr: Configure VRR timings after enabling TRANSDDIFUNCCTL Apparently ICL may hang with an MCE if we write TRANSVRRVMAX/FLIPLINE before enabling TRANSDDIFUNCCTL. Personally I was only able to reproduce a hang on an Dell X...