ARM: dts: msm: Update uart clock sleep config for sdxpoorwills

Add sleep configurations for UART node for removing clock votes during
suspend.

Change-Id: I77a96a47d5868a2bb930cfc1f7a7f2542412ff26
Signed-off-by: Jeevan Shriram <jshriram@codeaurora.org>
3 files changed