radeonsi: use compute shader for clear 12-byte buffer
Signed-off-by: Sonny Jiang sonny.jiang@amd.com Reviewed-by: Marek Olšák marek.olsak@amd.com
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Signed-off-by: Sonny Jiang sonny.jiang@amd.com Reviewed-by: Marek Olšák marek.olsak@amd.com