ARM: dts: msm: configure interrupt types for charger for pmi8998

Currently the interrupt trigger type is configured as NONE. This
causes a level handler to be assigned to these interrupts.

However, all of them are edge triggered interrupts with varying
falling/rising/both edge flavors. Update the device tree to
use their correct trigger types thereby preventing missed interrupt
storms because of incorrect handler types.

Change-Id: I6b5cddc8281ca7f6810dcb754d7dd2e6ae6f339c
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>