blender: updated for x64 buildbot (#7318)
blender: updated for x64 buildbot (#7318)

* blender: disabled x86

* blender: bumped to LLVM12

* blender: enable for x86 build

* blender: disabled x86.
Begasus/haikuports,haikuports/haikuports,Begasus/haikuports,haikuports/haikuports,Begasus/haikuports,Begasus/haikuports,haikuports/haikuports,haikuports/haikuports,Begasus/haikuports,haikuports/haikuports