sparc, sparc64: use arch/sparc/include

The majority of this patch was created by the following script:

***
ASM=arch/sparc/include/asm
mkdir -p $ASM
git mv include/asm-sparc64/ftrace.h $ASM
git rm include/asm-sparc64/*
git mv include/asm-sparc/* $ASM
sed -ie 's/asm-sparc64/asm/g' $ASM/*
sed -ie 's/asm-sparc/asm/g' $ASM/*
***

The rest was an update of the top-level Makefile to use sparc
for header files when sparc64 is being build.
And a small fixlet to pick up the correct unistd.h from
sparc64 code.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

arch/sparc/include/asm/of_device.h

@@ -0,0 +1,38 @@
+#ifndef _ASM_SPARC_OF_DEVICE_H
+#define _ASM_SPARC_OF_DEVICE_H
+#ifdef __KERNEL__
+
+#include <linux/device.h>
+#include <linux/of.h>
+#include <linux/mod_devicetable.h>
+#include <asm/openprom.h>
+
+/*
+ * The of_device is a kind of "base class" that is a superset of
+ * struct device for use by devices attached to an OF node and
+ * probed using OF properties.
+ */
+struct of_device
+{
+	struct device_node		*node;
+	struct device			dev;
+	struct resource			resource[PROMREG_MAX];
+	unsigned int			irqs[PROMINTR_MAX];
+	int				num_irqs;
+
+	void				*sysdata;
+
+	int				slot;
+	int				portid;
+	int				clock_freq;
+};
+
+extern void __iomem *of_ioremap(struct resource *res, unsigned long offset, unsigned long size, char *name);
+extern void of_iounmap(struct resource *res, void __iomem *base, unsigned long size);
+
+/* These are just here during the transition */
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
+
+#endif /* __KERNEL__ */
+#endif /* _ASM_SPARC_OF_DEVICE_H */