add helpers to read etc/boot-cpus at resume time

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
diff --git a/src/fw/paravirt.h b/src/fw/paravirt.h
index ed8e5f1..6f26fd0 100644
--- a/src/fw/paravirt.h
+++ b/src/fw/paravirt.h
@@ -52,4 +52,7 @@
 void qemu_platform_setup(void);
 void qemu_cfg_init(void);
 
+u16 qemu_init_present_cpus_count(void);
+u16 qemu_get_present_cpus_count(void);
+
 #endif