Arm Holdings Plc is canceling a license that allowed longtime partner Qualcomm Inc. to use Arm intellectual property to design chips, escalating a legal dispute over vital smartphone technology.Arm, based in the UK, has given Qualcomm a mandated 60-day notice of the cancellation of their so-called architectural license agreement, according to a document seen by Bloomberg. The contract allows Qualcomm to create its own chips based on standards owned by Arm....