kconfig: add cti-save-disable config in coresight

Added CONFIG_CORESIGHT_CTI_SAVE_DISABLE in kconfig of
coresight to choose CTI without save-restore functionality
for CPU cores.

Change-Id: I48128fbeda293a73d78946b8c222b5d0393c7595
Signed-off-by: Saranya Chidura <schidura@codeaurora.org>