meson: convert hw/usb

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/meson.build b/meson.build
index aa715e5..ec958ba 100644
--- a/meson.build
+++ b/meson.build
@@ -330,6 +330,21 @@
   xen = declare_dependency(compile_args: config_host['XEN_CFLAGS'].split(),
                            link_args: config_host['XEN_LIBS'].split())
 endif
+cacard = not_found
+if 'CONFIG_SMARTCARD' in config_host
+  cacard = declare_dependency(compile_args: config_host['SMARTCARD_CFLAGS'].split(),
+                              link_args: config_host['SMARTCARD_LIBS'].split())
+endif
+usbredir = not_found
+if 'CONFIG_USB_REDIR' in config_host
+  usbredir = declare_dependency(compile_args: config_host['USB_REDIR_CFLAGS'].split(),
+                                link_args: config_host['USB_REDIR_LIBS'].split())
+endif
+libusb = not_found
+if 'CONFIG_USB_LIBUSB' in config_host
+  libusb = declare_dependency(compile_args: config_host['LIBUSB_CFLAGS'].split(),
+                              link_args: config_host['LIBUSB_LIBS'].split())
+endif
 
 create_config = find_program('scripts/create_config')
 minikconf = find_program('scripts/minikconf.py')