powerpc: Move a bunch of ppc64 headers to include/asm-powerpc

... and also delete some that are no longer used because we already
had an include/asm-powerpc version of the header.

Signed-off-by: Paul Mackerras <paulus@samba.org>

include/asm-powerpc/btext.h

@@ -0,0 +1,27 @@
+/*
+ * Definitions for using the procedures in btext.c.
+ *
+ * Benjamin Herrenschmidt <benh@kernel.crashing.org>
+ */
+#ifndef __PPC_BTEXT_H
+#define __PPC_BTEXT_H
+#ifdef __KERNEL__
+
+extern void btext_clearscreen(void);
+extern void btext_flushscreen(void);
+
+extern int boot_text_mapped;
+
+extern int btext_initialize(struct device_node *np);
+
+extern void map_boot_text(void);
+extern void init_boot_display(void);
+extern void btext_update_display(unsigned long phys, int width, int height,
+				 int depth, int pitch);
+
+extern void btext_drawchar(char c);
+extern void btext_drawstring(const char *str);
+extern void btext_drawhex(unsigned long v);
+
+#endif /* __KERNEL__ */
+#endif /* __PPC_BTEXT_H */