msm8916: Modify the reboot and dload functionality for MSM8916.

1. Write the reboot reason to the DLOAD_MODE_CMD register.
2. Disable the WDOG DEBUG
3. Intimate PMIC on WARM or COLD Resets accordingly.
4. Halt the PMIC arbiter before pulling down the PS_HOLD.

Change-Id: I9d47f18eb38b2437cd8f577bba16416d8ae2e2c4
1 file changed