[PATCH v2 21/25] mtd: nand: qcom: support for QPIC page read/write

1. Add the function for command descriptor preparation which will be used only by BAM DMA and it will form the DMA descriptors containing command elements. 2. Add the data descriptor preparation function which will be used only by BAM DMA for forming the data SGL’s. 3. Add clear BAM

[PATCH v2 21/25] mtd: nand: qcom: support for QPIC page read/write

1. Add the function for command descriptor preparation which will be used only by BAM DMA and it will form the DMA descriptors containing command elements. 2. Add the data descriptor preparation function which will be used only by BAM DMA for forming the data SGL’s. 3. Add clear BAM