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/development/libraries/kissfft/0001-pkgconfig-darwin.patch

@@ -0,0 +1,48 @@
+From c0dc376be9154d143574a818417ceed23308b5f2 Mon Sep 17 00:00:00 2001
+From: OPNA2608 <christoph.neidahl@gmail.com>
+Date: Sun, 18 Apr 2021 01:45:20 +0200
+Subject: [PATCH] pkgconfig darwin
+
+---
+ Makefile | 4 ----
+ 1 file changed, 4 deletions(-)
+
+diff --git a/Makefile b/Makefile
+index 971c6d6..0f4be0c 100644
+--- a/Makefile
++++ b/Makefile
+@@ -153,7 +153,6 @@ endif
+ # -DKISS_FFT_BUILD to TYPEFLAGS
+ #
+ 
+-ifneq ($(shell uname -s),Darwin)
+ 	PKGCONFIG_KISSFFT_VERSION = $(KFVER_MAJOR).$(KFVER_MINOR).$(KFVER_PATCH)
+ 	PKGCONFIG_KISSFFT_OUTPUT_NAME = $(KISSFFTLIB_SHORTNAME)
+ 	PKGCONFIG_PKG_KISSFFT_DEFS = $(TYPEFLAGS)
+@@ -170,7 +169,6 @@ ifneq ($(shell uname -s),Darwin)
+ 	PKGCONFIG_KISSFFT_LIBDIR = $(ABS_LIBDIR)
+   endif
+ 	PKGCONFIG_KISSFFT_PKGINCLUDEDIR = $${includedir}/kissfft
+-endif
+ 
+ export TYPEFLAGS
+ 
+@@ -226,7 +224,6 @@ ifneq ($(KISSFFT_STATIC), 1)
+ 	ln -sf $(KISSFFTLIB_NAME) $(KISSFFTLIB_SODEVELNAME)
+   endif
+ endif
+-ifneq ($(shell uname -s),Darwin)
+ 	mkdir "$(ABS_LIBDIR)/pkgconfig"
+ 	sed \
+ 		-e 's+@PKGCONFIG_KISSFFT_VERSION@+$(PKGCONFIG_KISSFFT_VERSION)+' \
+@@ -238,7 +235,6 @@ ifneq ($(shell uname -s),Darwin)
+ 		-e 's+@PKGCONFIG_KISSFFT_LIBDIR@+$(PKGCONFIG_KISSFFT_LIBDIR)+' \
+ 		-e 's+@PKGCONFIG_KISSFFT_PKGINCLUDEDIR@+$(PKGCONFIG_KISSFFT_PKGINCLUDEDIR)+' \
+ 		kissfft.pc.in 1>"$(ABS_LIBDIR)/pkgconfig/$(KISSFFT_PKGCONFIG)"
+-endif
+ ifneq ($(KISSFFT_TOOLS), 0)
+ 	make -C tools install
+ endif
+-- 
+2.29.3
+