powerpc: Move setup_board_extra() into a PPC file

We don't need this PPC-specific function in generic code. Move it to
the powerpc directory.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile
index 3c97476..4f68613 100644
--- a/arch/powerpc/lib/Makefile
+++ b/arch/powerpc/lib/Makefile
@@ -17,6 +17,7 @@
 endif
 endif
 
+obj-$(CONFIG_SYS_EXTBDINFO) += setup.o
 ifdef MINIMAL
 obj-y += cache.o time.o
 obj-y += ticks.o
diff --git a/arch/powerpc/lib/setup.c b/arch/powerpc/lib/setup.c
new file mode 100644
index 0000000..a421335
--- /dev/null
+++ b/arch/powerpc/lib/setup.c
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2017 Google, Inc
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#include <common.h>
+#include <version.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int setup_board_extra(void)
+{
+	bd_t *bd = gd->bd;
+
+	strncpy((char *)bd->bi_s_version, "1.2", sizeof(bd->bi_s_version));
+	strncpy((char *)bd->bi_r_version, U_BOOT_VERSION,
+		sizeof(bd->bi_r_version));
+
+	bd->bi_procfreq = gd->cpu_clk;	/* Processor Speed, In Hz */
+	bd->bi_plb_busfreq = gd->bus_clk;
+#if defined(CONFIG_405GP) || defined(CONFIG_405EP) || \
+		defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
+		defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
+	bd->bi_pci_busfreq = get_PCI_freq();
+	bd->bi_opbfreq = get_OPB_freq();
+#elif defined(CONFIG_XILINX_405)
+	bd->bi_pci_busfreq = get_PCI_freq();
+#endif
+
+	return 0;
+}