soc: qcom: hab: fix the soft lockup in vchan free schedule

With a certain probability soft lockup when do hab vchan free schedule.
one vchan do the local hab close while another vchan in the same context
through softirq also try to acquire write lock in the free schedule at the
same time, it will cause watchdog bite. Disable local softirq could avoid
race condition handling between tasklet and process context.

Change-Id: I4ee9b980dab7ecb1986af1d61f70157fc30d1048
Signed-off-by: Yao Jiang <yaojia@codeaurora.org>