qcom: geni: i2c: Support SE DMA mode for bigger transactions

Use SE's internal DMA mode if current transaction size is bigger
than FIFO size.

CRs-Fixed: 2049768
Change-Id: Ia7aa4d24693fb700204c5638473b5d95c0d93b8d
Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@codeaurora.org>