MIPS: Remove useless zero initializations.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/mti-malta/malta-init.c b/arch/mips/mti-malta/malta-init.c
index 27c807b6..f1b14c8 100644
--- a/arch/mips/mti-malta/malta-init.c
+++ b/arch/mips/mti-malta/malta-init.c
@@ -47,7 +47,7 @@
  */
 #define prom_envp(index) ((char *)(long)_prom_envp[(index)])
 
-int init_debug = 0;
+int init_debug;
 
 static int mips_revision_corid;
 int mips_revision_sconid;