ARM: dts: msm: Fix serial driver device tree node for qcs405

Use UART2 for serial logging instead of UART1 and update corresponding
TLMM ping configuration.

Change-Id: Iddfe65ad731a93861f5ab013258916c0de8fb0ae
Signed-off-by: Avaneesh Kumar Dwivedi <akdwived@codeaurora.org>