ARM: dts: msm: Add device tree support for qcs605 lc variant

Add base device tree support for qcs605 low cost PM660 + pm8005
Remove the earlier overlay files as the device node does not
get deleted from them.

QCS605-LC does not have PM660L, hence remove its instances.

Change-Id: Id4d0457b564276a78e27b666f41e3933bf603c0a
Signed-off-by: Tirupathi Reddy <tirupath@codeaurora.org>
Signed-off-by: Gaurav Kohli <gkohli@codeaurora.org>