board_f: powerpc: Make prt_8260_rsr(), prt_8260_clks() private

Move these two function calls into checkcpu(), which is called on this
arch immediately after these two.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/include/common.h b/include/common.h
index 2e02709..35e2b15 100644
--- a/include/common.h
+++ b/include/common.h
@@ -637,9 +637,7 @@
 
 /* $(CPU)/speed.c */
 int	get_clocks (void);
-#if defined(CONFIG_MPC8260)
-int	prt_8260_clks (void);
-#elif defined(CONFIG_MPC5xxx)
+#if defined(CONFIG_MPC5xxx)
 int	prt_mpc5xxx_clks (void);
 #endif
 #ifdef CONFIG_4xx
@@ -710,9 +708,6 @@
 #endif
 
 int	cpu_init_r    (void);
-#if defined(CONFIG_MPC8260)
-int	prt_8260_rsr  (void);
-#endif
 
 /* $(CPU)/interrupts.c */
 int	interrupt_init	   (void);