drm/radeon: check that we have a clock before PLL setup
Partially fixes: https://bugzilla.kernel.org/show_bug.cgi?id=75211Signed-off-by: NChristian König <christian.koenig@amd.com>
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Partially fixes: https://bugzilla.kernel.org/show_bug.cgi?id=75211Signed-off-by: NChristian König <christian.koenig@amd.com>