I saw you are using the BSP 1.1.0 dirty, this BSP is for Quark but it is not totally supported for Galileo, I suggest you to use the BSP 1.0.1https://downloadcenter.intel.com/download/23823/Intel-Quark-BSP-Release-Archive
If you still get error messages, please let us know the last command you ran and all the log you are receiving.
BSP 1.0.1 is outdated and does not build. I've found that its trying to find a git for grub-fedora, but that git does not exist. The one that does is grub2-fedora, but if I make that change I then get a fatal error that "reference is not a tree: 5775f32a6268dead6939d01cbe72f23972f6d3c0"
I suggest you to use the the BSP 1.0.1
Do you have updates in this?
What is the output of running bitbake-layers show-layers and bitbake-layers show-recipes?
Are you cleaning your build after every try?
Also, are you building a default image or are you addind modules, packages, drivers..? Please let me know the steps you are following to build this image.