qcacmn: Fix few bugs in HIF DP Interrupt handling

Use disable_irq_nosync instead of disable_irq, as it is invoked
from handler for same IRQs which have to be disabled.
disable_irq waits for completion of IRQ thus causing a deadlock.
Initialize an unitialized variable in hif and fix the
DP interrupt names to match with the ones in dts file

CRs-Fixed: 1099955
Change-Id: I311eebb863fe3fb4d8c399e0817bc7d9af0b0e31
2 files changed