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/system/auto-cpufreq/fix-version-output.patch

@@ -0,0 +1,37 @@
+--- a/auto_cpufreq/core.py
++++ b/auto_cpufreq/core.py
+@@ -68,32 +68,8 @@ dist_name = distro.id()
+ 
+ # display running version of auto-cpufreq
+ def app_version():
+-
+-    print("auto-cpufreq version:")
+-
+-    # snap package
+-    if os.getenv("PKG_MARKER") == "SNAP":
+-        print(getoutput("echo Snap: $SNAP_VERSION"))
+-    # aur package
+-    elif dist_name in ["arch", "manjaro", "garuda"]:
+-        aur_pkg_check = call("pacman -Qs auto-cpufreq > /dev/null", shell=True)
+-        if aur_pkg_check == 1:
+-            print(
+-                "Git commit:",
+-                check_output(["git", "describe", "--always"]).strip().decode(),
+-            )
+-        else:
+-            print(getoutput("pacman -Qi auto-cpufreq | grep Version"))
+-    else:
+-        # source code (auto-cpufreq-installer)
+-        try:
+-            print(
+-                "Git commit:",
+-                check_output(["git", "describe", "--always"]).strip().decode(),
+-            )
+-        except Exception as e:
+-            print(repr(e))
+-            pass
++    print("auto-cpufreq version: @version@")
++    print("Git commit: v@version@")
+ 
+ 
+ def app_res_use():