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/games/srb2kart/wadlocation.patch

@@ -0,0 +1,61 @@
+diff --git a/src/sdl/i_system.c b/src/sdl/i_system.c
+index 51f708d0..c4d971f7 100644
+--- a/src/sdl/i_system.c
++++ b/src/sdl/i_system.c
+@@ -139,7 +139,7 @@ typedef LPVOID (WINAPI *p_MapViewOfFile) (HANDLE, DWORD, DWORD, DWORD, SIZE_T);
+ 
+ // Locations for searching the srb2.srb
+ #if defined (__unix__) || defined(__APPLE__) || defined (UNIXCOMMON)
+-#define DEFAULTWADLOCATION1 "/usr/local/share/games/SRB2Kart"
++#define DEFAULTWADLOCATION1 "@wadlocation@"
+ #define DEFAULTWADLOCATION2 "/usr/local/games/SRB2Kart"
+ #define DEFAULTWADLOCATION3 "/usr/share/games/SRB2Kart"
+ #define DEFAULTWADLOCATION4 "/usr/games/SRB2Kart"
+@@ -3646,47 +3646,6 @@ static const char *locateWad(void)
+ 	if (((envstr = I_GetEnv("SRB2WADDIR")) != NULL) && isWadPathOk(envstr))
+ 		return envstr;
+ 
+-#ifndef NOCWD
+-	I_OutputMsg(",.");
+-	// examine current dir
+-	strcpy(returnWadPath, ".");
+-	if (isWadPathOk(returnWadPath))
+-		return NULL;
+-#endif
+-
+-
+-#ifdef DEFAULTDIR
+-	I_OutputMsg(",HOME/" DEFAULTDIR);
+-	// examine user jart directory
+-	if ((envstr = I_GetEnv("HOME")) != NULL)
+-	{
+-		sprintf(returnWadPath, "%s" PATHSEP DEFAULTDIR, envstr);
+-		if (isWadPathOk(returnWadPath))
+-			return returnWadPath;
+-	}
+-#endif
+-
+-
+-#ifdef CMAKECONFIG
+-#ifndef NDEBUG
+-	I_OutputMsg(","CMAKE_ASSETS_DIR);
+-	strcpy(returnWadPath, CMAKE_ASSETS_DIR);
+-	if (isWadPathOk(returnWadPath))
+-	{
+-		return returnWadPath;
+-	}
+-#endif
+-#endif
+-
+-#ifdef __APPLE__
+-	OSX_GetResourcesPath(returnWadPath);
+-	I_OutputMsg(",%s", returnWadPath);
+-	if (isWadPathOk(returnWadPath))
+-	{
+-		return returnWadPath;
+-	}
+-#endif
+-
+ 	// examine default dirs
+ #ifdef DEFAULTWADLOCATION1
+ 	I_OutputMsg(","DEFAULTWADLOCATION1);