ARM: dts: msm: Disable lpm sleep modes for msmtriton

Disable lpm sleep modes for msmtriton emulation platform
at boot time as PMIC related functionality is not emulated.

Change-Id: Ic85fdf082c8a5e3676c99398f42d36963cd352f3
Signed-off-by: Raju P.L.S.S.S.N <rplsssn@codeaurora.org>