pc-bios/meson: Only install EDK2 blob firmwares with system emulation

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210122204441.2145197-4-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/pc-bios/meson.build b/pc-bios/meson.build
index af95c5d..f2b3259 100644
--- a/pc-bios/meson.build
+++ b/pc-bios/meson.build
@@ -12,6 +12,7 @@
 
   foreach f : fds
     custom_target(f,
+                  build_by_default: have_system,
                   output: f,
                   input: '@0@.bz2'.format(f),
                   capture: true,