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/applications/audio/csound/csound-qt/rtmidipath.patch

@@ -0,0 +1,17 @@
+diff --git a/src/src.pri b/src/src.pri
+index e5e0c896..9a9fa513 100644
+--- a/src/src.pri
++++ b/src/src.pri
+@@ -155,9 +155,9 @@ pythonqt {
+         "src/pyqcsobject.cpp"
+ }
+ rtmidi {
+-    HEADERS += "src/../$${RTMIDI_DIR}/RtMidi.h"
+-    SOURCES += "src/../$${RTMIDI_DIR}/RtMidi.cpp"
+-    INCLUDEPATH += src/../$${RTMIDI_DIR}
++    HEADERS += "$${RTMIDI_DIR}/RtMidi.h"
++    SOURCES += "$${RTMIDI_DIR}/RtMidi.cpp"
++    INCLUDEPATH += $${RTMIDI_DIR}
+ }
+ 
+ perfThread_build {