[PATCH 4.15 009/202] Revert "drm/i915: mark all device info struct with __initconst"

4.15-stable review patch. If anyone has any objections, please let me know. -- From: Lionel Landwerlin commit b5a756a722286af9702d565501e1f690d075d16b upstream. This reverts commit 5b54eddd3920e9f6f1a6d972454baf350cbae77e. Conflicts:

[PATCH 4.15 009/202] Revert "drm/i915: mark all device info struct with __initconst"

4.15-stable review patch. If anyone has any objections, please let me know. -- From: Lionel Landwerlin commit b5a756a722286af9702d565501e1f690d075d16b upstream. This reverts commit 5b54eddd3920e9f6f1a6d972454baf350cbae77e. Conflicts: drivers/gpu/drm/i915/i915_pci.c