[MIPS] TXx9: Cleanup watchdog

Unify registration of txx9wdt platform device.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/txx9/generic/setup_tx4927.c b/arch/mips/txx9/generic/setup_tx4927.c
index 89d6e28..b42c855 100644
--- a/arch/mips/txx9/generic/setup_tx4927.c
+++ b/arch/mips/txx9/generic/setup_tx4927.c
@@ -21,7 +21,7 @@
 #include <asm/txx9/generic.h>
 #include <asm/txx9/tx4927.h>
 
-void __init tx4927_wdr_init(void)
+static void __init tx4927_wdr_init(void)
 {
 	/* clear WatchDogReset (W1C) */
 	tx4927_ccfg_set(TX4927_CCFG_WDRST);
@@ -29,6 +29,11 @@
 	tx4927_ccfg_set(TX4927_CCFG_WR);
 }
 
+void __init tx4927_wdt_init(void)
+{
+	txx9_wdt_init(TX4927_TMR_REG(2) & 0xfffffffffULL);
+}
+
 static struct resource tx4927_sdram_resource[4];
 
 void __init tx4927_setup(void)