Allow overriding the SCSI INQUIRY removable (RMB) bit for scsi-disk and usb-msd
devices. In particular this addresses the problem that some usb-msd devices
have the bit set while other do not have it set. Now the user can choose and
get desired guest behavior.
qemu -usb
-drive if=none,file=test.img,cache=none,id=disk0
-device usb-storage,drive=disk0,removable=on
The default is off.
v4:
* Explicitly state that scsi-generic does not support the removable bit
override
* Try to make the scsi_bus_legacy_add_drive() commit description clearer
v3:
* Document removable property in qdev-device-use.txt
* Use bit number 0 instead of bit 1 for the qdev property
v2:
* Rewritten to override the bit at the scsi-disk level
