uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/tools/cd-dvd/dvdisaster/dvdrom.patch

@@ -0,0 +1,19 @@
+Author: Corey Wright <undefined@pobox.com>
+Description: Adds support for DVD-ROM medium-type.
+
+Index: dvdisaster/scsi-layer.c
+===================================================================
+--- dvdisaster.orig/scsi-layer.c	2012-03-06 11:10:17.147044691 +0900
++++ dvdisaster/scsi-layer.c	2012-03-06 11:10:30.927044292 +0900
+@@ -913,6 +913,11 @@
+ 	    break;
+ 	 }
+ 
++	 if(layer_type & 0x01)
++	 {  dh->typeDescr = g_strdup("DVD-ROM");
++	    break;
++	 }
++
+ 	 if(layer_type & 0x06) /* strange thing: (re-)writeable but neither plus nor dash */ 
+ 	 {  dh->typeDescr = g_strdup("DVD-ROM (fake)");
+ 	    dh->subType = DVD;