include stdio.h to suppress printf warning, general warnings fixups

src/core/buffer.c

  *
  */
 
+#include "stdio.h"
 #include "stddef.h"
 #include "string.h"
 #include "io.h"

src/core/dev.c

 		return 1;
 	} while ( bus_driver->next_location ( bus_loc ) );
 
-	DBG ( "DEV found no device for driver %s\n" );
+	DBG ( "DEV found no device for driver %s\n", device_driver->name );
 	return 0;
 }
 

src/core/device.c

 #include <gpxe/list.h>
 #include <gpxe/tables.h>
 #include <gpxe/device.h>
+#include "stdio.h"
 
 /**
  * @file

src/core/main.c

 
 #endif
 
-
-
+#if 0
 static int main_loop(int state);
 static int exit_ok;
-static int exit_status;
 static int initialized;
+#endif
+
+static int exit_status;
 
+void test_dhcp ( struct net_device *netdev );
 
 /**************************************************************************
 MAIN - Kick off routine

src/core/malloc.c

  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+#include <stdio.h>
 #include <stddef.h>
 #include <stdint.h>
 #include <string.h>
 	 */
 	size = ( size + MIN_MEMBLOCK_SIZE - 1 ) & ~( MIN_MEMBLOCK_SIZE - 1 );
 	align_mask = ( align - 1 ) | ( MIN_MEMBLOCK_SIZE - 1 );
+
 	DBG ( "Allocating %#zx (aligned %#zx)\n", size, align );
 
 	/* Search through blocks for the first one with enough space */

src/core/osloader.c

  * your option) any later version.
  */
 
+#include "stdio.h"
 #include "io.h"
 #include "memsizes.h"