MIPS: math-emu: Use helpers to manipulate CAUSEF_BD flag.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/math-emu/dsemul.c b/arch/mips/math-emu/dsemul.c
index 7ea622a..cd047fe 100644
--- a/arch/mips/math-emu/dsemul.c
+++ b/arch/mips/math-emu/dsemul.c
@@ -59,7 +59,7 @@
 		(ir == 0)) {
 		/* NOP is easy */
 		regs->cp0_epc = cpc;
-		regs->cp0_cause &= ~CAUSEF_BD;
+		clear_delay_slot(regs);
 		return 0;
 	}
 #ifdef DSEMUL_TRACE