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/os-specific/bsd/netbsd/sys-headers-incsdir.patch

@@ -0,0 +1,13 @@
+diff --git a/Makefile b/Makefile
+index 3f1e18dc659d..163362b82f94 100644
+--- a/Makefile
++++ b/Makefile
+@@ -2,6 +2,8 @@
+ 
+ .include <bsd.own.mk>
+ 
++INCSDIR= ${INCSDIR0}
++
+ SUBDIR=	altq arch compat dev fs miscfs \
+ 	net net80211 netatalk netbt netcan netipsec netinet netinet6 \
+         netmpls netsmb \