msm: kgsl: Try to run soft reset on all targets that support it

Run soft reset on all targets that define a soft_reset function hook.
If the target defines jump table offsets then we can run through a
faster reset sequence, otherwise default to the slower full reset
path.  In any event, both these options are much faster than the
hard reset path that toggles the regulators.

Change-Id: Ic0dedbad4cbfdc083f16b026e133159814481886
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>