[PATCH] powerpc: Make ppc_md.set_dabr non 64-bit specific

Define ppc_md.set_dabr for both 32 + 64 bit. Cleanup the implementation for
pSeries also, it was needlessly complex. Now we just do two firmware tests at
setup time, and use one of two functions, rather than using one function and
testing on every call.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/include/asm-powerpc/machdep.h b/include/asm-powerpc/machdep.h
index 629ca96..b623bc4 100644
--- a/include/asm-powerpc/machdep.h
+++ b/include/asm-powerpc/machdep.h
@@ -80,7 +80,6 @@
 	void		(*iommu_dev_setup)(struct pci_dev *dev);
 	void		(*iommu_bus_setup)(struct pci_bus *bus);
 	void		(*irq_bus_setup)(struct pci_bus *bus);
-	int		(*set_dabr)(unsigned long dabr);
 #endif
 
 	int		(*probe)(int platform);
@@ -156,6 +155,9 @@
 	   platform, called once per cpu. */
 	void		(*enable_pmcs)(void);
 
+	/* Set DABR for this platform, leave empty for default implemenation */
+	int		(*set_dabr)(unsigned long dabr);
+
 #ifdef CONFIG_PPC32	/* XXX for now */
 	/* A general init function, called by ppc_init in init/main.c.
 	   May be NULL. */