drm: ci: use clk_ignore_unused for apq8016

If the ADV7511 bridge driver is compiled as a module, while DRM_MSM is
built-in, the clk_disable_unused congests with the runtime PM handling
of the DSI PHY for the clk_prepare_lock(). This causes apq8016 runner to
fail without completing any jobs ([1]). Drop the BM_CMDLINE which
duplicate the command line from the .baremetal-igt-arm64 clause and
enforce the clk_ignore_unused kernelarg instead to make apq8016 runner
work.

[1] https://gitlab.freedesktop.org/drm/msm/-/jobs/54990475

Fixes: 0119c894

 ("drm: Add initial ci/ subdirectory")
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Helen Koike <helen.koike@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240214083708.2323967-1-dmitry.baryshkov@linaro.org