refactor(fvp): move certain tests to 11.24 FVP

There is known bug in FVP-11.25 and 11.26 that doesn't power down
secondary cores correctly when core threads are used.

So to avoid the test failure on 11.26 use 11.24 FVP.

Change-Id: I579aef3e11b177a8d3ef10e793441e6490ad6bd3
Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
(cherry picked from commit 02e14fa8767ad2f7a8bf82325b1957f0fab84329)
7 files changed