ARM: dts: msm: Support PHY sleep clock reset for Krypton initialization

Krypton initialization sequence requires reset of the phy_sleep_clk.
Setting the device tree attribute to indicate that such a reset should
be performed.

Change-Id: Ia2fdf4f7783121e78be989eee0745932ae68b78b
Signed-off-by: Maya Erez <merez@codeaurora.org>