loader: pass args along to unix in C
There's no reason why we can't pass the args gotten from the bootloader to
unix in C.
Note: loader's _start sets the ATAG pointer to 0x100.  This change simply
propagates it to unix.

@@ -9,10 +9,11 @@
  * http://www.illumos.org/license/CDDL.
  */
 
 /*
  * Copyright (c) 2014 Joyent, Inc.  All rights reserved.
+ * Copyright (c) 2015 Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
  */
 
 #include "fakeloader.h"
 
 #include <sys/types.h>

@@ -705,8 +706,8 @@
         /* Renable caches */
         armv6_dcache_enable();
         armv6_icache_enable();
 
         /* we should never come back */
-        fakeload_exec(unix_start);
+        fakeload_exec(ident, ident2, chain, unix_start);
         fakeload_panic("hit the end of the world\n");
 }