sparc64: refactor the ali DMA quirk

Do the quirk first in the dma_supported routines, as we don't need
any of the other checks for it, and remove the duplicate mask checking
that is already done by the callers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: David S. Miller <davem@davemloft.net>

arch/sparc/kernel/kernel.h

@@ -45,7 +45,11 @@ void __irq_entry smp_receive_signal_client(int irq, struct pt_regs *regs);
 void __irq_entry smp_kgdb_capture_client(int irq, struct pt_regs *regs);
 
 /* pci.c */
-int pci64_dma_supported(struct pci_dev *pdev, u64 device_mask);
+#ifdef CONFIG_PCI
+int ali_sound_dma_hack(struct device *dev, u64 device_mask);
+#else
+#define ali_sound_dma_hack(dev, mask)	(0)
+#endif
 
 /* signal32.c */
 void do_sigreturn32(struct pt_regs *regs);