PPC32: only request the PReP-specific resources on PReP systems.

arch/ppc/platforms/prep_setup.c

@@ -807,6 +807,7 @@ prep_map_io(void)
 static int __init
 prep_request_io(void)
 {
+	if (_machine == _MACH_prep) {
 #ifdef CONFIG_NVRAM
 		request_region(PREP_NVRAM_AS0, 0x8, "nvram");
 #endif
@@ -814,6 +815,7 @@ prep_request_io(void)
 		request_region(0x40,0x20,"timer");
 		request_region(0x80,0x10,"dma page reg");
 		request_region(0xc0,0x20,"dma2");
+	}
 
 	return 0;
 }