ARM: dts: msm: update bluetooth device node for qcs605 lc variant

 - Updated the regulators powering the BT module.
 - Enable UART for sdm670

Change-Id: I05a810fb7a74e123ec6d47d004795d9ccc134106
Signed-off-by: Rupesh Tatiya <rtatiya@codeaurora.org>
Signed-off-by: Bandari Ramesh <ramban@codeaurora.org>
Signed-off-by: Bikshapathi Kothapeta <bkotha@codeaurora.org>