enable more qemu's

[bhcopeland]

In GitLab by @aroxell on May 20, 2021, 13:48 GMT+1:

• riscv32
• mips32
• mips32el
• ppc32

Assignees: ivoire

Migrated from GitLab: https://gitlab.com/Linaro/tuxrun/-/issues/16

[bhcopeland]

In GitLab by @bhcopeland on May 20, 2021, 13:50 GMT+1:

Reference: https://wiki.qemu.org/Documentation/Platforms

Semi-related: https://projects.linaro.org/browse/LKQ-346