msm8992: Enable irq balancer

The msm_irqbalance daemon starts up as root and then
lower its privileges immediately to user nobody while holding
on to capability to read/write files on the file system (proc).

The msm_irqbalance daemon balances IRQs among available cores to ensure
even IRQ load on each core. The daemon also moves IRQs away from cores
that are configured to not handle any IRQs

Change-Id: I70faaedbf0d4ff4972e13013ba1131d27e877224

rootdir/etc/init.qcom.sh

@@ -237,7 +237,7 @@ case "$target" in
                   ;;
         esac
         ;;
-    "msm8994")
+    "msm8994" | "msm8992")
         start_msm_irqbalance
         ;;
     "msm8909")