[MIPS] Fix typo in R3000 TRACE_IRQFLAGS code

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/kernel/genex.S b/arch/mips/kernel/genex.S
index c0f19d6..e76a76b 100644
--- a/arch/mips/kernel/genex.S
+++ b/arch/mips/kernel/genex.S
@@ -146,7 +146,7 @@
 	and	k0, ST0_IEP
 	bnez	k0, 1f
 
-	mfc0	k0, EP0_EPC
+	mfc0	k0, CP0_EPC
 	.set	noreorder
 	j	k0
 	rfe