target: msm8952: Improve logic for power off charging trigger
target: msm8952: Improve logic for power off charging trigger

Use usb present rt_stat combined with pon reason to decide whether
entering into power off charging phase.

Change-Id: I965ffcbe7b9ce38c9910dcd2b66fe42f125bfe12

Foxda-Tech/polaris-bootable-bootloader-lk,Foxda-Tech/polaris-bootable-bootloader-lk,Foxda-Tech/polaris-bootable-bootloader-lk,Foxda-Tech/polaris-bootable-bootloader-lk,Foxda-Tech/polaris-bootable-bootloader-lk