fix: minor fixes to RNG trap configs

Following changes done
 - Rename tf_config from "fvp-default-rng-trap" to "fvp-rng-trap"
 - Remove unnecessary MAJOR version

Signed-off-by: Manish Pandey <manish.pandey2@arm.com>
Change-Id: I4ee12596fcacb729e9bbae7a5c026bdac44a2839
3 files changed