coresight: rename directory and files from cs to coresight

Since cs is not a well known acronym for CoreSight, rename
directory and files from cs to coresight.

Change-Id: I5f9b12794b80b1c01c9ce0621d53ee6be408a361
Signed-off-by: Pratik Patel <pratikp@codeaurora.org>
18 files changed