Drop the static inline print_cpuinfo()

This is only called from one place and the function cannot be inlined.
Convert it to a normal function.

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

include/common.h

@@ -284,14 +284,7 @@ int mac_read_from_eeprom(void);
 extern u8 __dtb_dt_begin[];	/* embedded device tree blob */
 int set_cpu_clk_info(void);
 int mdm_init(void);
-#if defined(CONFIG_DISPLAY_CPUINFO)
 int print_cpuinfo(void);
-#else
-static inline int print_cpuinfo(void)
-{
-	return 0;
-}
-#endif
 int update_flash_size(int flash_size);
 int arch_early_init_r(void);