Revert "soc: qcom: Remove watchdog percpu interrupts"

This reverts commit d71acda6.
This is being reverted because sdxlemur uses percpu interrupts
in its watchdog. This change also adds back in fields used by
this code and fixes issues introduced by new code.

Change-Id: Ic5ddbebd6c6f4b4c5d157a86a3ecd827e1b5376f
Signed-off-by: Melody Olvera <molvera@codeaurora.org>