i386: Avoid warning with apic=debug 

There are two consumers of apic=: the apic debug level and the low 
level generic architecture code. early_param would warn when the
low level code rejected "debug". Avoid this.

Signed-off-by: Andi Kleen <ak@suse.de>

---
 arch/i386/mach-generic/probe.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletion(-)

Index: linux/arch/i386/mach-generic/probe.c
===================================================================
--- linux.orig/arch/i386/mach-generic/probe.c
+++ linux/arch/i386/mach-generic/probe.c
@@ -45,7 +45,9 @@ static int __init parse_apic(char *arg)
 			return 0;
 		}
 	}
-	return -ENOENT;
+
+	/* Parsed again by __setup for debug/verbose */
+	return 0;
 }
 early_param("apic", parse_apic);