[PATCH v4] x86: i8237: Register based on FADT legacy boot flag

From: Rajneesh Bhardwaj >From Skylake onwards, the platform controller hub (Sunrisepoint PCH) does not support legacy DMA operations to IO ports 81h-83h, 87h, 89h-8Bh, 8Fh. Currently this driver registers as syscore ops and its resume function is called on every

[PATCH v4] x86: i8237: Register based on FADT legacy boot flag

From: Rajneesh Bhardwaj >From Skylake onwards, the platform controller hub (Sunrisepoint PCH) does not support legacy DMA operations to IO ports 81h-83h, 87h, 89h-8Bh, 8Fh. Currently this driver registers as syscore ops and its resume function is called on every resume from S3. On Skylake and