refactor(cpus): convert the Cortex-x2 to use cpu helpers

Change-Id: Ic1016eb8598dbba08cdfc3bdaa24f90411d83a7c
Signed-off-by: Jayanth Dodderi Chidanand <jayanthdodderi.chidanand@arm.com>
(cherry picked from commit fdd3287829b92a2b8f611678c4fe24ede95535e5)
1 file changed