dtraceall: Enable kinst for aarch64 and riscv as well

aarch64 and riscv are supported since 2023 so it should be safe to
enable it by default.

MFC after: 2 weeks
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D52575

(cherry picked from commit 67f3c0d6a575f74a013974b4d4860a36e4fcc8ab)