[MIPS] markeins: build fix

This patch fixes the following build errror caused by
commit 7dffa3c6
(ntp: handle leap second via timer):

<--  snip  -->

...
  CC      arch/mips/emma2rh/markeins/setup.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/mips/emma2rh/markeins/setup.c:79: error: conflicting types for 'clock'
/home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/clocksource.h:96: error: previous declaration of 'clock' was here
make[2]: *** [arch/mips/emma2rh/markeins/setup.o] Error 1

<--  snip  -->

[Ralf: reformated to 80 colums after the fix and marked emma2rh_clock as
__initdata]
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/emma2rh/markeins/setup.c

@@ -76,7 +76,9 @@ static void markeins_machine_power_off(void)
 	while (1) ;
 }
 
-static unsigned long clock[4] = { 166500000, 187312500, 199800000, 210600000 };
+static unsigned long __initdata emma2rh_clock[4] = {
+	166500000, 187312500, 199800000, 210600000
+};
 
 static unsigned int __init detect_bus_frequency(unsigned long rtc_base)
 {
@@ -85,7 +87,8 @@ static unsigned int __init detect_bus_frequency(unsigned long rtc_base)
 	/* detect from boot strap */
 	reg = emma2rh_in32(EMMA2RH_BHIF_STRAP_0);
 	reg = (reg >> 4) & 0x3;
-	return clock[reg];
+
+	return emma2rh_clock[reg];
 }
 
 void __init plat_time_init(void)