ARM: dts: msm: Add sleep clock for HS PHY on QCS405

For HS PHY to trigger any interrupts in suspend it
required sleep clock to be enabled.
So, enable add the proper sleep clock and enable it
on probe.

Change-Id: Ib7816dfb677fb8076b15c6e44accba140bc4f326
Signed-off-by: Sriharsha Allenki <sallenki@codeaurora.org>