runqemu: let command line parameters override defaults
It may be necessary to override the parameters gathered for the qemu
invocation. For example, the qemux86 machine configuration sets "-vga
vmware", but when using OVMF as BIOS, only "-vga std" is supported.
By putting the parameters derived from custom runqemu parameters like
"qemuparams" after the parameters derived from the machine
configuration the user gets the possibility to override those.
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com> Signed-off-by: Ross Burton <ross.burton@intel.com>
