fix(tc): resolve the static-checks errors

Converted the space indentation to tabs to fix the
errors listed under tf-static-checks CI job.

Change-Id: Ie911a5befd0eeaa5a2019245cc3c43ad375cd068
Signed-off-by: Jayanth Dodderi Chidanand <jayanthdodderi.chidanand@arm.com>