KVM: selftests: Use the innermost page allocator API in s390's IRQ routing test

Use the quad-underscores page allocator in s390's IRQ routing test in
anticipation of dropping the @min_gpa param from the primary APIs.

Note, it's not entirely clear that the test *needs* to use a very magical
@min_gpa, i.e. it's possible a more elegant solution exists.  But that's a
problem for a different day.

No functional change intended.

Tested-by: Itaru Kitayama <itaru.kitayama@fujitsu.com>
Acked-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Tested-by: Itaru Kitayam <itaru.kitayama@fujitsu.com>
Link: https://patch.msgid.link/20260902164123.2546762-10-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

0 files changed, 0 insertions, 0 deletions