Group QEMU platform setup together and move to paravirt.c.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
diff --git a/src/paravirt.h b/src/paravirt.h
index 4438273..96b35ba 100644
--- a/src/paravirt.h
+++ b/src/paravirt.h
@@ -23,8 +23,8 @@
     return CONFIG_QEMU && GET_GLOBAL(PlatformRunningOn) & PF_KVM;
 }
 
-void qemu_ramsize_preinit(void);
-void qemu_biostable_setup(void);
+void qemu_preinit(void);
+void qemu_platform_setup(void);
 void qemu_cfg_init(void);
 
 #endif