x86: Add probe_roms to x86_init

probe_roms is only used on 32bit. Add it to the x86_init ops and
remove the #ifdefs.

Default initializer is x86_init_noop() which is overridden in
the 32bit boot code.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/kernel/head32.c

@@ -29,6 +29,9 @@ void __init i386_start_kernel(void)
 		reserve_early(ramdisk_image, ramdisk_end, "RAMDISK");
 	}
 #endif
+	/* Initilize 32bit specific setup functions */
+	x86_init.resources.probe_roms = probe_roms;
+
 	reserve_ebda_region();
 
 	/*