tests: Don't enable EL2/EL3 in AArch32 for long regressions
tests: Don't enable EL2/EL3 in AArch32 for long regressions

This is fixing long regressions, caused by
automatically enabling EL2 and EL3 in Arm.
This is temporary: either fixing EL3 boot in AArch32 or
disabling EL3 in AArch32 should be chosen in the long term

Change-Id: If92b219ff89dcf13916a151fac9a2a3ac0e7d69b
Signed-off-by: Giacomo Travaglini <8eef13a4f970e2e9372c8d26ad0737b760f99c02@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/59849
Maintainer: Jason Lowe-Power <92de577f37050ad05b60626d2f17913f40dcb1a2@gmail.com>
Reviewed-by: Jason Lowe-Power <92de577f37050ad05b60626d2f17913f40dcb1a2@gmail.com>
Tested-by: kokoro <2ac7b1f3fa578934c95181d4272be0d3bca00121@google.com>

gem5/gem5,gem5/gem5,gem5/gem5,gem5/gem5,gem5/gem5,gem5/gem5,gem5/gem5