msm: kgsl: Featurize soft fault detect

Make soft fault detection a feature in GPU list instead of having
it on by default. Also, make it a boot parameter and remove the
sysfs entries relevant to it.

Change-Id: I89e8c40c04bb8bc891bddca3d3ab4394d9e30b5b
Signed-off-by: Shrenuj Bansal <shrenujb@codeaurora.org>