meson fixes:
* --disable-tools --enable-system build
* s390 no-TCG build
* fdmon-io_uring
* 'shift' error message in version_ge()
# gpg: Signature made Fri 21 Aug 2020 22:12:29 BST
# gpg: using RSA key
F13338574B662389866C7682BFFBD25F78C7AE83
# gpg: issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83
* remotes/bonzini-gitlab/tags/for-upstream:
keymaps: update
meson: Fix --disable-tools --enable-system builds
meson: convert pc-bios/keymaps/Makefile
configure: silence 'shift' error message in version_ge()
util/meson.build: fix fdmon-io_uring build
target/s390x: fix meson.build issue
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>