powerpc/ps3: Set driver coherent_dma_mask

On Wed, Jul 18, 2018 at 03:08:33PM -0700, Geoff Levand wrote:

Set the coherent_dma_mask for the PS3 ehci, ohci, and snd devices.

Silences WARN_ON_ONCE messages emitted by the dma_alloc_attrs() routine.

Reported-by: Fredrik Noring <redacted>
Signed-off-by: Geoff Levand <geoff@infradead.org>
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Hi Michael,

This just silences some warnings.  Can you take it through the powerpc
tree?

Oops, nevermind, it should go through the ppc tree.  Here's my ack:

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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