soc: qcom: core_hang: Add core hang driver

Add driver for core hang detection.
This drivers provides sysfs entries to configure
threshold, pmu event select and enable parameters
for core hang detection feature.

Change-Id: Ieb19b309238fc11f1a631842564a7e43b16651dc
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>