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/python-modules/gyp/no-xcode.patch

@@ -0,0 +1,25 @@
+--- gyp-old/pylib/gyp/xcode_emulation.py	1980-01-02 00:00:00.000000000 -0600
++++ gyp/pylib/gyp/xcode_emulation.py	2020-08-02 20:24:24.871322520 -0500
+@@ -1407,10 +1407,10 @@
+       raise GypError("xcodebuild returned unexpected results")
+   except:
+     version = CLTVersion()
+-    if version:
++    if version and re.match(r'(\d\.\d\.?\d*)', version):
+       version = re.match(r'(\d\.\d\.?\d*)', version).groups()[0]
+     else:
+-      raise GypError("No Xcode or CLT version detected!")
++      version = '7.0.0'
+     # The CLT has no build information, so we return an empty string.
+     version_list = [version, '']
+   version = version_list[0]
+@@ -1667,7 +1667,8 @@
+     sdk_root = xcode_settings._SdkRoot(configuration)
+     if not sdk_root:
+       sdk_root = xcode_settings._XcodeSdkPath('')
+-    env['SDKROOT'] = sdk_root
++    if not sdk_root:
++      env['SDKROOT'] = ''
+ 
+   if not additional_settings:
+     additional_settings = {}