Draft: Add disable-dmabuf-broadcom-x11.patch

Daniel van Vugtrequested to merge
vanvugt/webkit:fix-raspi-issues into wk2/unstable

Draft: Only because I don't have the available compute time to build this giant thing yet.

This avoids crashes and corruption being reported on Raspberry Pi (only with X11).

To re-enable it for testing you can use environment: WEBKIT_DMABUF_RENDERER_FORCE_SHM=0

Bug: https://bugs.webkit.org/show_bug.cgi?id=272827
Bug: https://gitlab.freedesktop.org/mesa/mesa/-/issues/11033
Bug-Ubuntu: https://bugs.launchpad.net/bugs/2037015
Bug-Ubuntu: https://bugs.launchpad.net/bugs/2062146

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