ARM64: add support for cache management instructions (Valgrind side):
  dc cvau, regX
  ic ivau, regX
  mrs regX, ctr_el0
Fixes #333228 and #333230.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13931 a5019735-40e9-0310-863c-91ae7b9d1cf9
VG_(invalidate_icache) for ARM64: fix incorrect computation of cache
line sizes.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13932 a5019735-40e9-0310-863c-91ae7b9d1cf9
Update aarch64 fixes.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13933 a5019735-40e9-0310-863c-91ae7b9d1cf9