coresight: Add snapshot of jtagv8 driver

Add snapshot for jtagv8 driver from msm-4.19
commit c953c9b6eb1f ("include/linux: add notifier for fps change").
Make necessary change to adopt scm framework change.

Change-Id: I289846a1bcb3c0dd11514db69e0088198f7d1cb1
Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org>