MIPS: ingenic: Add missing include

Add missing include which adds the prototype to plat_time_init().

Fixes: f932449c ("MIPS: ingenic: Drop obsolete code, merge the rest in setup.c")
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

arch/mips/jz4740/setup.c

@@ -20,6 +20,7 @@
 #include <asm/fw/fw.h>
 #include <asm/prom.h>
 #include <asm/reboot.h>
+#include <asm/time.h>
 
 #define JZ4740_EMC_BASE_ADDR 0x13010000