msm_serial_hs: Add support for device tree for BLSP based UART

This change adds support for device tree for BLSP based UART
Core.

Also document pdata and their usage with device tree in :
Documentation/devicetree/bindings/tty/serial/msm_serial_hs.txt

Change-Id: I72c6bdcf1b22320ef4674b17fab226ae0cac72ac
Signed-off-by: Mayank Rana <mrana@codeaurora.org>
Signed-off-by: Saket Saurabh <ssaurabh@codeaurora.org>
3 files changed