arch-arm: Always initialize SVE memData

Some compilers will produce a warning when using an uninitialized
memData.

JIRA: https://gem5.atlassian.net/browse/GEM5-196

Change-Id: I19e197b15729a03da546a0188917a9b3e7bf31b7
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23525
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Tested-by: kokoro <noreply+kokoro@google.com>
1 file changed