configure: add CONFIG_IASL to config-host.h

Acpi unit-tests will extract iasl executable
from CONFIG_IASL define.
Signed-off-by: NMarcel Apfelbaum <marcel.a@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

scripts/create_config

@@ -26,6 +26,10 @@ case $line in
     # save for the next definitions
     prefix=${line#*=}
     ;;
+ IASL=*) # iasl executable
+    value=${line#*=}
+    echo "#define CONFIG_IASL $value"
+    ;;
  CONFIG_AUDIO_DRIVERS=*)
     drivers=${line#*=}
     echo "#define CONFIG_AUDIO_DRIVERS \\"