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/linux/sgx/ssl/intel-sgx-ssl-pr-111.patch

@@ -0,0 +1,99 @@
+From 1683c336e11b3cbe2b48c1be1c9460a661523c71 Mon Sep 17 00:00:00 2001
+From: Vincent Haupert <mail@vincent-haupert.de>
+Date: Sat, 8 Jan 2022 17:22:31 +0100
+Subject: [PATCH 1/3] Linux: fix Nix detection
+
+Detect the `OS_ID` of Nix by probing for the presence of the `NIX_STORE`
+environment variable instead of `NIX_PATH`. The latter is only set in a
+`nix-shell` session but isn't when building a derivation through
+`nix-build`. In contrast, the `NIX_STORE` environment variable is set in
+both cases.
+
+Signed-off-by: Vincent Haupert <mail@vincent-haupert.de>
+---
+ Linux/sgx/buildenv.mk | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Linux/sgx/buildenv.mk b/Linux/sgx/buildenv.mk
+index cd8818e..dac23c7 100644
+--- a/Linux/sgx/buildenv.mk
++++ b/Linux/sgx/buildenv.mk
+@@ -65,7 +65,7 @@ $(shell mkdir -p $(PACKAGE_LIB))
+ UBUNTU_CONFNAME:=/usr/include/x86_64-linux-gnu/bits/confname.h
+ ifneq ("$(wildcard $(UBUNTU_CONFNAME))","")
+ 	OS_ID=1
+-else ifeq ($(origin NIX_PATH),environment)
++else ifeq ($(origin NIX_STORE),environment)
+ 	OS_ID=3
+ else
+ 	OS_ID=2
+
+From f493525face589d759223bfa45bb802c31ddce4f Mon Sep 17 00:00:00 2001
+From: Vincent Haupert <mail@vincent-haupert.de>
+Date: Sat, 8 Jan 2022 17:33:22 +0100
+Subject: [PATCH 2/3] Linux: call binaries relative to PATH
+
+Using an absolute path to call binaries is incompatible with
+distributions which do not follow the Filesystem Hierachy Standard;
+Nix is an example. Also, it is inconsistent with the rest of the code
+base, let alone superfluous.
+
+Signed-off-by: Vincent Haupert <mail@vincent-haupert.de>
+---
+ Linux/build_openssl.sh | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Linux/build_openssl.sh b/Linux/build_openssl.sh
+index 7d77b79..e8b59a1 100755
+--- a/Linux/build_openssl.sh
++++ b/Linux/build_openssl.sh
+@@ -38,7 +38,7 @@ SGXSSL_ROOT="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+ echo $SGXSSL_ROOT
+ 
+ OPENSSL_INSTALL_DIR="$SGXSSL_ROOT/../openssl_source/OpenSSL_install_dir_tmp"
+-OPENSSL_VERSION=`/bin/ls $SGXSSL_ROOT/../openssl_source/*1.1.1*.tar.gz | /usr/bin/head -1 | /bin/grep -o '[^/]*$' | /bin/sed -s -- 's/\.tar\.gz//'`
++OPENSSL_VERSION=`ls $SGXSSL_ROOT/../openssl_source/*1.1.1*.tar.gz | head -1 | grep -o '[^/]*$' | sed -s -- 's/\.tar\.gz//'`
+ if [ "$OPENSSL_VERSION" == "" ] 
+ then
+ 	echo "In order to run this script, OpenSSL tar.gz package must be located in openssl_source/ directory."
+
+From fdb883d30fff72b5cfb8c61a2288d3d948f64224 Mon Sep 17 00:00:00 2001
+From: Vincent Haupert <mail@vincent-haupert.de>
+Date: Tue, 11 Jan 2022 10:56:39 +0100
+Subject: [PATCH 3/3] Linux: properly extract GCC major version
+
+Calling `gcc -dumpversion` yields the full version string, e.g.,
+`10.3.0`. The `build_openssl.sh` bash script uses the `-ge` number
+comparison operator to check if the returned version is at least
+8. This results in an error if the returned GCC version includes a patch
+version; "10.3.0" isn't a valid number.
+
+This commit fixes the version detection by only extracting the relevant
+major version of GCC.
+
+Signed-off-by: Vincent Haupert <mail@vincent-haupert.de>
+---
+ Linux/build_openssl.sh | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/Linux/build_openssl.sh b/Linux/build_openssl.sh
+index e8b59a1..6e4046f 100755
+--- a/Linux/build_openssl.sh
++++ b/Linux/build_openssl.sh
+@@ -82,6 +82,7 @@ fi
+ MITIGATION_OPT=""
+ MITIGATION_FLAGS=""
+ CC_VERSION=`gcc -dumpversion`
++CC_VERSION_MAJOR=`echo "$CC_VERSION" | cut -f1 -d.`
+ for arg in "$@"
+ do
+     case $arg in
+@@ -99,7 +100,7 @@ do
+         ;;
+     -mfunction-return=thunk-extern)
+         MITIGATION_FLAGS+=" $arg"
+-        if [[ $CC_VERSION -ge 8 ]] ; then
++        if [[ "$CC_VERSION_MAJOR" -ge 8 ]] ; then
+             MITIGATION_FLAGS+=" -fcf-protection=none"
+         fi
+         shift