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/build-support/setup-hooks/auto-patchelf.sh

@@ -0,0 +1,92 @@
+#!/usr/bin/env bash
+
+declare -a autoPatchelfLibs
+declare -a extraAutoPatchelfLibs
+
+gatherLibraries() {
+    autoPatchelfLibs+=("$1/lib")
+}
+
+# shellcheck disable=SC2154
+# (targetOffset is referenced but not assigned.)
+addEnvHooks "$targetOffset" gatherLibraries
+
+# Can be used to manually add additional directories with shared object files
+# to be included for the next autoPatchelf invocation.
+addAutoPatchelfSearchPath() {
+    local -a findOpts=()
+
+    while [ $# -gt 0 ]; do
+        case "$1" in
+            --) shift; break;;
+            --no-recurse) shift; findOpts+=("-maxdepth" 1);;
+            --*)
+                echo "addAutoPatchelfSearchPath: ERROR: Invalid command line" \
+                     "argument: $1" >&2
+                return 1;;
+            *) break;;
+        esac
+    done
+
+    local dir=
+    while IFS= read -r -d '' dir; do
+        extraAutoPatchelfLibs+=("$dir")
+    done <  <(find "$@" "${findOpts[@]}" \! -type d \
+            \( -name '*.so' -o -name '*.so.*' \) -print0 \
+            | sed -z 's#/[^/]*$##' \
+            | uniq -z
+        )
+}
+
+
+autoPatchelf() {
+    local norecurse=
+    while [ $# -gt 0 ]; do
+        case "$1" in
+            --) shift; break;;
+            --no-recurse) shift; norecurse=1;;
+            --*)
+                echo "autoPatchelf: ERROR: Invalid command line" \
+                     "argument: $1" >&2
+                return 1;;
+            *) break;;
+        esac
+    done
+
+    local ignoreMissingDepsArray=($autoPatchelfIgnoreMissingDeps)
+    if [ "$autoPatchelfIgnoreMissingDeps" == "1" ]; then
+        echo "autoPatchelf: WARNING: setting 'autoPatchelfIgnoreMissingDeps" \
+             "= true;' is deprecated and will be removed in a future release." \
+             "Use 'autoPatchelfIgnoreMissingDeps = [ \"*\" ];' instead." >&2
+        ignoreMissingDepsArray=( "*" )
+    fi
+
+    local runtimeDependenciesArray=($runtimeDependencies)
+    @pythonInterpreter@ @autoPatchelfScript@                            \
+        ${norecurse:+--no-recurse}                                      \
+        --ignore-missing "${ignoreMissingDepsArray[@]}"                 \
+        --paths "$@"                                                    \
+        --libs "${autoPatchelfLibs[@]}"                                 \
+               "${extraAutoPatchelfLibs[@]}"                            \
+        --runtime-dependencies "${runtimeDependenciesArray[@]/%//lib}"
+}
+
+# XXX: This should ultimately use fixupOutputHooks but we currently don't have
+# a way to enforce the order. If we have $runtimeDependencies set, the setup
+# hook of patchelf is going to ruin everything and strip out those additional
+# RPATHs.
+#
+# So what we do here is basically run in postFixup and emulate the same
+# behaviour as fixupOutputHooks because the setup hook for patchelf is run in
+# fixupOutput and the postFixup hook runs later.
+#
+# shellcheck disable=SC2016
+# (Expressions don't expand in single quotes, use double quotes for that.)
+postFixupHooks+=('
+    if [ -z "${dontAutoPatchelf-}" ]; then
+        autoPatchelf -- $(for output in $outputs; do
+            [ -e "${!output}" ] || continue
+            echo "${!output}"
+        done)
+    fi
+')