[MIPS] i8253 PIT clocksource and clockevent drivers

Derived from the i386 variant with a few x86 complexities chopped off.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/jazz/setup.c

@@ -25,6 +25,7 @@
 #include <linux/serial_8250.h>
 
 #include <asm/bootinfo.h>
+#include <asm/i8253.h>
 #include <asm/irq.h>
 #include <asm/jazz.h>
 #include <asm/jazzdma.h>
@@ -63,6 +64,11 @@ static struct resource jazz_io_resources[] = {
 	}
 };
 
+void __init plat_time_init(void)
+{
+	setup_pit_timer();
+}
+
 void __init plat_mem_setup(void)
 {
 	int i;