package/qemu: update to 9.1.0

See here for changes:
https://wiki.qemu.org/ChangeLog/9.1

The support for the nios2 architecture got removed.

[Romain: Remove BR2_PACKAGE_QEMU_TARGET_NIOS2 from qemu.mk]
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Romain Naour <romain.naour@smile.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
5 files changed