ARM: dts: msm: disable lpm and modify boot option for QCS405

Link stability issues are being seen with LPM enabled,
Hence disable link low power modes. Modify boot option
such that end point enumeration can be initiated by RC
during probe.

Change-Id: I693bfecfc4cba5ac6862aed009fe976ab237f568
Signed-off-by: Rama Krishna Phani A <rphani@codeaurora.org>