vl: Add missing descriptions to the VGA adapters list
Some VGA adapters do not contain an helpful description,
this can be confusing:
$ qemu-system-arm -M virt -vga help
none
std standard VGA
cirrus Cirrus VGA (default)
vmware VMWare SVGA
xenfb
Add a description to the missing adapters:
$ qemu-system-arm -M virt -vga help
none no graphic card
std standard VGA
cirrus Cirrus VGA (default)
vmware VMWare SVGA
xenfb Xen paravirtualized framebuffer
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Based-on: <
20190412152713.16018-1-marcandre.lureau@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>
Message-Id: <
20190412163706.3878-1-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>