[POWERPC] Move RapidIO support code from arch/ppc

Do just enough to move the RapidIO support code for 85xx over from arch/ppc
into arch/powerpc and make it still build.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/ppc/platforms/85xx/stx_gp3.c b/arch/ppc/platforms/85xx/stx_gp3.c
index 731b40e..8748da3 100644
--- a/arch/ppc/platforms/85xx/stx_gp3.c
+++ b/arch/ppc/platforms/85xx/stx_gp3.c
@@ -54,7 +54,6 @@
 
 #include <syslib/cpm2_pic.h>
 #include <syslib/ppc85xx_common.h>
-#include <syslib/ppc85xx_rio.h>
 
 
 unsigned char __res[sizeof(bd_t)];
@@ -270,6 +269,7 @@
 #endif /* CONFIG_PCI */
 
 #ifdef CONFIG_RAPIDIO
+extern void mpc85xx_rio_setup(int law_start, int law_size);
 void
 platform_rio_init(void)
 {