NetworkManager: fix cross gir patch for ppc64le target

srcpkgs/NetworkManager/patches/fix-cross-gir.patch

@@ -11,19 +11,22 @@ Upstream: No, not upstreamable since this is very specific to the Void setup
    )
  
    test(
---- libnm/meson.build
-+++ libnm/meson.build
-@@ -244,7 +244,21 @@ if enable_introspection
+--- libnm/meson.build	2019-11-27 21:35:56.964752550 +0100
++++ -	2019-11-27 21:40:25.516650233 +0100
+@@ -244,7 +244,24 @@
      )
    endif
  
 -  generate_setting_docs = join_paths(meson.current_source_dir(), 'generate-setting-docs.py')
 +  if meson.is_cross_build()
 +      arch = host_machine.cpu_family()
++      endian = host_machine.endian()
 +      if arch == 'x86'
 +              qemu_arch = 'i386'
 +      elif arch == 'x86_64'
 +              qemu_arch = 'x86_64'
++      elif arch == 'ppc64' and endian == 'little'
++              qemu_arch = 'ppc64le'
 +      else
 +              qemu_arch = host_machine.cpu_family()
 +      endif