qemu: update 6.0.0 -> 6.1.0

qemu: update 6.0.0 -> 6.1.0

Recipe changes:
qemu-plugin.h is installed by both qemu-native and qemu-system-native

qmp.py module is now provided in a module directory (no other files
from that directory are necessary to use it though)

additional host-specific info is stripeed from ptest tests/tcg/*.mak

Patches:
drop all backports

drop 0001-Add-enable-disable-udev.patch (change added upstream)

drop 0001-linux-user-Tag-vsx-with-ieee128-fpbits.patch
(issue fixed upstream)

drop 0004-qemu-disable-Valgrind.patch (valgrind detection moved
from configure to meson, and should be robust against host contamination)

rebase 0010-configure-Add-pkg-config-handling-for-libgcrypt.patch
(upstream moved libgcrypt handling from configure to meson, and using
pkg-config is now a one-liner adjustment)

rebase cross.patch

Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>