tdf#42949 Add filter file to unoidl/

Seems I forgot about this in commit
7f6a5b433988e80f7d404c67d6320116ecb28c06

Change-Id: Ic575292b99836374f179cbc1dbe182858415b63f
Reviewed-on: https://gerrit.libreoffice.org/71306
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>
diff --git a/unoidl/IwyuFilter_unoidl.yaml b/unoidl/IwyuFilter_unoidl.yaml
new file mode 100644
index 0000000..c0f74e5
--- /dev/null
+++ b/unoidl/IwyuFilter_unoidl.yaml
@@ -0,0 +1,6 @@
---
assumeFilename: unoidl/source/unoidl.cxx
blacklist:
    unoidl/source/unoidl-write.cxx:
    # Avoid loplugin:oslendian error
    - osl/endian.h