Relocate global sm variable to reduce include file deps

The new state machine handling is not necessary to export to external
plugins, so this patch reduces the exposure of the global variable sm

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

finit.h

@@ -35,8 +35,6 @@
 #include <unistd.h>
 #include <lite/lite.h>
 
-#include "sm.h"
-
 #define CMD_SIZE                256
 #define LINE_SIZE               1024
 #define BUF_SIZE                4096
@@ -80,7 +78,6 @@ extern char  *username;
 extern char  *runparts;
 extern char  *console;
 extern char  *__progname;
-extern sm_t  sm;
 
 #endif /* FINIT_H_ */