[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/include/asm-mips/txx9/generic.h b/include/asm-mips/txx9/generic.h
index cbae37e..2b34d09 100644
--- a/include/asm-mips/txx9/generic.h
+++ b/include/asm-mips/txx9/generic.h
@@ -44,5 +44,6 @@
 extern int (*txx9_irq_dispatch)(int pending);
 void prom_init_cmdline(void);
 char *prom_getcmdline(void);
+void txx9_wdt_init(unsigned long base);
 
 #endif /* __ASM_TXX9_GENERIC_H */