Merge tag 'trivial-branch-for-7.0-pull-request' of https://gitlab.com/laurent_vivier...

Trivial branch pull request 20220401

Fix sh4 linux-user build on Alpine
and some trivial updates

# gpg: Signature made Thu 31 Mar 2022 23:18:21 BST
# gpg:                using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* tag 'trivial-branch-for-7.0-pull-request' of https://gitlab.com/laurent_vivier/qemu:
  tests/lcitool: Do not use a hard-coded /usr/bin/python3 as python interpreter
  vhost-vdpa: fix typo in a comment
  target/sh4: Remove old README.sh4 file
  linux-user/sh4/termbits: Silence warning about TIOCSER_TEMT double definition

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>