SoftBank 's ( SFTBY ) announcement late Sunday of its $32 billion deal to acquire Apple ( AAPL ) iPhone component supplier ARM Holdings ( ARMH ) could stoke further M&A activity, with top-five chipmakers -- Intel ( INTC ), Texas Instruments ( TXN ), NXP Semiconductors ( NXPI ), Qualcomm ( QCOM ) and Broadcom ( AVGO ) -- cited as potential acquirers.