pata_sil680: convert CONFIG_PPC_MERGE to CONFIG_PPC

Now that arch/ppc is dead CONFIG_PPC_MERGE is always defined for all
powerpc platforms and we want to get rid of CONFIG_PPC_MERGE use
CONFIG_PPC instead.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/ata/pata_sil680.c b/drivers/ata/pata_sil680.c
index e970b22..a598bb3 100644
--- a/drivers/ata/pata_sil680.c
+++ b/drivers/ata/pata_sil680.c
@@ -230,7 +230,7 @@
 		tmpbyte & 1, tmpbyte & 0x30);
 
 	*try_mmio = 0;
-#ifdef CONFIG_PPC_MERGE
+#ifdef CONFIG_PPC
 	if (machine_is(cell))
 		*try_mmio = (tmpbyte & 1) || pci_resource_start(pdev, 5);
 #endif