Add BIOS DBus object

When HOST_BIOS_UPGRADE is enabled, create the "default" BIOS DBus object
so that it could be used for other services.
Typically, the BIOS version is sent from BIOS via OEM ipmi command, and
the oem handler could set the BIOS version accordingly.

When the BIOS is updated, this service could directly set the BIOS
version as well.

Tested: Verify the BIOS activation/version object is created on DBus.

Signed-off-by: Lei YU <yulei.sh@bytedance.com>
Change-Id: I10d7b9a035d6a6f649fc5950f37e8fdb0db70176
diff --git a/meson.build b/meson.build
index 0e8a3c0..a6ebcc4 100644
--- a/meson.build
+++ b/meson.build
@@ -79,6 +79,9 @@
 conf.set_quoted('BMC_MSL', get_option('bmc-msl'))
 conf.set_quoted('REGEX_BMC_MSL', get_option('regex-bmc-msl'))
 
+if get_option('host-bios-upgrade').enabled()
+    conf.set_quoted('BIOS_OBJPATH', get_option('bios-object-path'))
+endif
 
 configure_file(output: 'config.h', configuration: conf)