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/networking/mailutils/path-to-cat.patch

@@ -0,0 +1,52 @@
+diff --git a/mh/show.c b/mh/show.c
+index a43afe10c..6985386ec 100644
+--- a/mh/show.c
++++ b/mh/show.c
+@@ -254,7 +254,7 @@ main (int argc, char **argv)
+   */
+ 
+   if (!use_showproc)
+-    showproc = "/bin/cat";
++    showproc = "cat";
+   else
+     showproc = mh_global_profile_get ("showproc", NULL);
+ 
+diff --git a/mh/tests/mhparam.at b/mh/tests/mhparam.at
+index 54b7fc06a..3abd5bf9b 100644
+--- a/mh/tests/mhparam.at
++++ b/mh/tests/mhparam.at
+@@ -28,7 +28,7 @@ mhparam -all | tr '\t' ' ' | sed 's/^Path:.*/Path: Mail/;s/^mhetcdir:.*/mhetcdir
+ [0],
+ [Path: Mail
+ mhetcdir: dir
+-moreproc: /bin/cat
++moreproc: cat
+ Sequence-Negation: not
+ Draft-Folder: Mail/drafts
+ Aliasfile: .mh_aliases
+diff --git a/mh/tests/testsuite.at b/mh/tests/testsuite.at
+index c6820843c..6675a4a9c 100644
+--- a/mh/tests/testsuite.at
++++ b/mh/tests/testsuite.at
+@@ -25,7 +25,7 @@ export MH
+ cat > $MH <<EOT
+ Path: $HOME/Mail
+ mhetcdir: $abs_top_srcdir/mh/etc
+-moreproc: /bin/cat
++moreproc: cat
+ EOT
+ MTSTAILOR=$HOME/mtstailor
+ export MTSTAILOR
+diff --git a/testsuite/lib/mailutils.exp b/testsuite/lib/mailutils.exp
+index d4691d922..c1b056933 100644
+--- a/testsuite/lib/mailutils.exp
++++ b/testsuite/lib/mailutils.exp
+@@ -728,7 +728,7 @@ proc mu_test_file {args} {
+         set pattern [lrange $args 1 end]
+     }
+     
+-    set res [remote_spawn host "/bin/cat $filename"]
++    set res [remote_spawn host "cat $filename"]
+     if { $res < 0 || $res == "" } {
+ 	perror "Reading $filename failed."
+ 	return 1;