board_f: Use static print_cpuinfo if CONFIG_CPU is active

When the DM CPU drivers are active, printing information about a CPU
should be delegated to a matching driver.

Hence, add a static print_cpuinfo that implements this delegation when
DM CPU drivers are active.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Changed condition to CONFIG_IS_ENABLED(CPU):
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/common/board_f.c b/common/board_f.c
index afafec5..213d044 100644
--- a/common/board_f.c
+++ b/common/board_f.c
@@ -11,6 +11,7 @@
 
 #include <common.h>
 #include <console.h>
+#include <cpu.h>
 #include <dm.h>
 #include <environment.h>
 #include <fdtdec.h>
@@ -165,6 +166,33 @@
 }
 #endif
 
+#if defined(CONFIG_DISPLAY_CPUINFO) && CONFIG_IS_ENABLED(CPU)
+static int print_cpuinfo(void)
+{
+	struct udevice *dev;
+	char desc[512];
+	int ret;
+
+	ret = uclass_first_device_err(UCLASS_CPU, &dev);
+	if (ret) {
+		debug("%s: Could not get CPU device (err = %d)\n",
+		      __func__, ret);
+		return ret;
+	}
+
+	ret = cpu_get_desc(dev, desc, sizeof(desc));
+	if (ret) {
+		debug("%s: Could not get CPU description (err = %d)\n",
+		      dev->name, ret);
+		return ret;
+	}
+
+	printf("%s", desc);
+
+	return 0;
+}
+#endif
+
 static int announce_dram_init(void)
 {
 	puts("DRAM:  ");