s390: Fix the default cache configuration. As z10-EC has an L3
cache, use that instead of the L2 -- bringing the code in synch
with documentation. 
Also improve the warning message to be more meaningful.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12911 a5019735-40e9-0310-863c-91ae7b9d1cf9
2 files changed