ARM: dts: msm: Fix KPDPWR and KPDPWR_RESIN PON configuration in pm8998

As per the hardware documentation, configure S2 reset type for
KPDPWR_RESIN PON configuration to DVDD_HARD_RESET. Since KPDPWR
S1/S2 timer and S2 reset type is configured by bootloader for
the internal devices, HLOS doesn't need to configure it again.
Hence remove it.

Change-Id: I000953dba1fd138c1dbcbb94e15f95ac78a07acd
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>