[Intel-gfx] igt/kms_rotation_crc: Add horizontal flip subtest.

[Petri Latvala]

> Subject: [Intel-gfx]  igt/kms_rotation_crc: Add horizontal flip subtest.

The subject is missing [PATCH i-g-t]. Did you use git format-patch -k?

Please make sure the patch subjectprefix is correct when sending IGT
patches so patchwork and thus CI can collect them. autogen.sh will set
the subjectprefix for you automatically.



-- 
Petri Latvala