board_f: powerpc: Move prt_83xx_rsr() to private code

This function is called just before checkcpu() on MPX83xx. Move it to the
code for that arch.

Signed-off-by: Simon Glass <sjg@chromium.org>

arch/powerpc/cpu/mpc83xx/cpu.c

@@ -33,6 +33,7 @@ int checkcpu(void)
 	u32 pvr = get_pvr();
 	u32 spridr;
 	char buf[32];
+	int ret;
 	int i;
 
 	const struct cpu_type {
@@ -61,6 +62,10 @@ int checkcpu(void)
 
 	immr = (immap_t *)CONFIG_SYS_IMMR;
 
+	ret = prt_83xx_rsr();
+	if (ret)
+		return ret;
+
 	puts("CPU:   ");
 
 	switch (pvr & 0xffff0000) {

arch/powerpc/cpu/mpc83xx/cpu_init.c

@@ -8,6 +8,7 @@
 #include <mpc83xx.h>
 #include <ioports.h>
 #include <asm/io.h>
+#include <asm/processor.h>
 #ifdef CONFIG_USB_EHCI_FSL
 #include <usb/ehci-ci.h>
 #endif

arch/powerpc/include/asm/processor.h

@@ -1354,6 +1354,8 @@ void ll_puts(const char *);
 /* In misc.c */
 void _nmask_and_or_msr(unsigned long nmask, unsigned long or_val);
 
+int prt_83xx_rsr(void);
+
 #endif /* ndef ASSEMBLY*/
 
 #ifdef CONFIG_MACH_SPECIFIC