tty: serial: Add UART driver snapshot for QUPv3 based core

This snapshot is taken as of msm-4.9 'commit <e8a6a75991d4>
("Merge "usb: core: Add usb_set_interface_timeout API"")'.

UART driver for QUPv3 supports high-speed UART, and console UART
functionality, and supports FIFO and CPU_DMA mode.

CRs-Fixed: 2124301
Change-Id: Ia4bf290e1d3fe1982f266729ee3bf2a12bd93c12
Signed-off-by: Girish Mahadevan <girishm@codeaurora.org>
Signed-off-by: sagar Dharia <sdharia@codeaurora.org>