ATA BMDMA support

configname: CONFIG_ATA_BMDMA

Linux Kernel Configuration
└─> Device Drivers
└─> Serial ATA and Parallel ATA drivers (libata)
└─> ATA BMDMA support

This option adds support for SFF ATA controllers with BMDMA
capability. BMDMA stands for bus-master DMA and is the
de facto DMA interface for SFF controllers.

If unsure, say Y.