Too late for that. Smartphone SoCs is a low margin business that controlled by Qualcomm (or in-house like Apple, Google and Samsung to some extent) on the high-end and it would absurd for Intel to try and compete for the low-end/budget market.

Yeah, they had the chance to dominate the ARM market with XScale but that ship has long sailed.

Also how is having a small, insignificant stake in ARM itself related to this anyway?