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/development/libraries/smpeg/gcc6.patch

@@ -0,0 +1,33 @@
+--- a/audio/hufftable.cpp
++++ b/audio/hufftable.cpp
+@@ -9,6 +9,7 @@
+ #include "config.h"
+ #endif
+ 
++#include <climits>
+ #include "MPEGaudio.h"
+ 
+ static const unsigned int
+@@ -550,11 +551,11 @@ htd33[ 31][2]={{ 16,  1},{  8,  1},{  4,
+ 
+ const HUFFMANCODETABLE MPEGaudio::ht[HTN]=
+ {
+-  { 0, 0-1, 0-1, 0,  0, htd33},
++  { 0, UINT_MAX, UINT_MAX, 0,  0, htd33},
+   { 1, 2-1, 2-1, 0,  7,htd01},
+   { 2, 3-1, 3-1, 0, 17,htd02},
+   { 3, 3-1, 3-1, 0, 17,htd03},
+-  { 4, 0-1, 0-1, 0,  0, htd33},
++  { 4, UINT_MAX, UINT_MAX, 0,  0, htd33},
+   { 5, 4-1, 4-1, 0, 31,htd05},
+   { 6, 4-1, 4-1, 0, 31,htd06},
+   { 7, 6-1, 6-1, 0, 71,htd07},
+@@ -564,7 +565,7 @@ const HUFFMANCODETABLE MPEGaudio::ht[HTN
+   {11, 8-1, 8-1, 0,127,htd11},
+   {12, 8-1, 8-1, 0,127,htd12},
+   {13,16-1,16-1, 0,511,htd13},
+-  {14, 0-1, 0-1, 0,  0, htd33},
++  {14, UINT_MAX, UINT_MAX, 0,  0, htd33},
+   {15,16-1,16-1, 0,511,htd15},
+   {16,16-1,16-1, 1,511,htd16},
+   {17,16-1,16-1, 2,511,htd16},