[MIPS] Ocelot C: Fix warning about missmatching format string.

  CC      arch/mips/momentum/ocelot_c/setup.o
arch/mips/momentum/ocelot_c/setup.c: In function 'momenco_time_init':
arch/mips/momentum/ocelot_c/setup.c:223: warning: format '%d' expects type 'int', but argument 2 has type 'long unsigned int'

Change data type to match format string; a 32-bit type better suits our
needs.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/momentum/ocelot_c/prom.c b/arch/mips/momentum/ocelot_c/prom.c
index 4c50a14..1f67728 100644
--- a/arch/mips/momentum/ocelot_c/prom.c
+++ b/arch/mips/momentum/ocelot_c/prom.c
@@ -29,7 +29,7 @@
 struct callvectors* debug_vectors;
 
 extern unsigned long marvell_base;
-extern unsigned long cpu_clock;
+extern unsigned int cpu_clock;
 
 #ifdef CONFIG_MV643XX_ETH
 extern unsigned char prom_mac_addr_base[6];