meson: remove CONFIG_XEN_PCI_PASSTHROUGH from config-target.h

CONFIG_XEN_PCI_PASSTHROUGH is just a global configuration option;
it is never used in the source files, so there is no need to put
CONFIG_XEN_PCI_PASSTHROUGH in config-target.h or even in config-host.h.

This inaccuracy was copied over from the configure script in commit
8a19980e3f ("configure: move accelerator logic to meson", 2020-10-03).

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

hw/xen/meson.build

@@ -8,13 +8,17 @@ softmmu_ss.add(when: ['CONFIG_XEN', xen], if_true: files(
 ))
 
 xen_specific_ss = ss.source_set()
-xen_specific_ss.add(when: 'CONFIG_XEN_PCI_PASSTHROUGH', if_true: files(
-  'xen-host-pci-device.c',
-  'xen_pt.c',
-  'xen_pt_config_init.c',
-  'xen_pt_graphics.c',
-  'xen_pt_load_rom.c',
-  'xen_pt_msi.c',
-), if_false: files('xen_pt_stub.c'))
+if have_xen_pci_passthrough
+  xen_specific_ss.add(files(
+    'xen-host-pci-device.c',
+    'xen_pt.c',
+    'xen_pt_config_init.c',
+    'xen_pt_graphics.c',
+    'xen_pt_load_rom.c',
+    'xen_pt_msi.c',
+  ))
+else
+  xen_specific_ss.add('xen_pt_stub.c')
+endif
 
 specific_ss.add_all(when: ['CONFIG_XEN', xen], if_true: xen_specific_ss)

meson.build

@@ -2242,8 +2242,6 @@ foreach target : target_dirs
       config_all += { sym: 'y' }
       if sym == 'CONFIG_TCG' and tcg_arch == 'tci'
         config_target += { 'CONFIG_TCG_INTERPRETER': 'y' }
-      elif sym == 'CONFIG_XEN' and have_xen_pci_passthrough
-        config_target += { 'CONFIG_XEN_PCI_PASSTHROUGH': 'y' }
       endif
       if target in modular_tcg
         config_target += { 'CONFIG_TCG_MODULAR': 'y' }