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/misc/rig/rig_1.11-1.diff

@@ -0,0 +1,39 @@
+--- rig-1.11.orig/Makefile
++++ rig-1.11/Makefile
+@@ -1,20 +1,21 @@
+-PREFIX=/usr/local
++PREFIX=${out}
+ BINDIR=${PREFIX}/bin
+ MANDIR=${PREFIX}/man
+ DATADIR=${PREFIX}/share/rig
++CXX=g++
+ 
+ all: rig rig.6
+ rig: rig.cc
+-	g++ -g rig.cc -o rig -Wall -DDATADIR="\"$(DATADIR)\""
++	${CXX} -O2 -g rig.cc -o rig -Wall -DDATADIR="\"$(DATADIR)\""
+ 
+ rig.6: rig.6.in
+ 	sed s@DATADIR@"$(DATADIR)"@g < rig.6.in > rig.6
+ 
+ install: rig rig.6
+-	install -g 0 -m 755 -o 0 -s rig $(BINDIR)
+-	install -g 0 -m 644 -o 0 rig.6 $(MANDIR)/man6/rig.6
+-	install -g 0 -m 755 -o 0 -d $(DATADIR)
+-	install -g 0 -m 644 -o 0 data/*.idx $(DATADIR)
++	install -m 755 -d $(DESTDIR)$(DATADIR)
++	install -m 755 -d $(DESTDIR)$(BINDIR)
++	install -m 755 rig $(DESTDIR)$(BINDIR)/rig
++	install -m 644 data/*.idx $(DESTDIR)$(DATADIR)
+ 
+ clean:
+ 	rm -rf *~ *.rej *.orig *.o rig rig.6
+--- rig-1.11.orig/rig.cc
++++ rig-1.11/rig.cc
+@@ -26,6 +26,7 @@
+ #include <time.h>
+ #include <errno.h>
+ #include <assert.h>
++#include <string.h>
+ 
+ using namespace std;