tests/qtest: Run ipmi-bt-test only if CONFIG_IPMI_EXTERN is set

The ipmi-bt-test uses "-device ipmi-bmc-extern", thus it should
only be run if this device has been enabled in the configuration.

Message-Id: <20230524081024.1619273-1-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

tests/qtest/meson.build

@@ -49,7 +49,8 @@ qtests_i386 = \
   (config_all_devices.has_key('CONFIG_SGA') ? ['boot-serial-test'] : []) +                  \
   (config_all_devices.has_key('CONFIG_ISA_IPMI_KCS') ? ['ipmi-kcs-test'] : []) +            \
   (config_host.has_key('CONFIG_LINUX') and                                                  \
-   config_all_devices.has_key('CONFIG_ISA_IPMI_BT') ? ['ipmi-bt-test'] : []) +              \
+   config_all_devices.has_key('CONFIG_ISA_IPMI_BT') and
+   config_all_devices.has_key('CONFIG_IPMI_EXTERN') ? ['ipmi-bt-test'] : []) +              \
   (config_all_devices.has_key('CONFIG_WDT_IB700') ? ['wdt_ib700-test'] : []) +              \
   (config_all_devices.has_key('CONFIG_PVPANIC_ISA') ? ['pvpanic-test'] : []) +              \
   (config_all_devices.has_key('CONFIG_PVPANIC_PCI') ? ['pvpanic-pci-test'] : []) +          \