MIPS: math-emu: Inline ieee754sp_issnan and ieee754dp_issnan.

Shaves another 16 bytes off but more importantly avoids function calls.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/math-emu/ieee754sp.c b/arch/mips/math-emu/ieee754sp.c
index 495295c..a90837a 100644
--- a/arch/mips/math-emu/ieee754sp.c
+++ b/arch/mips/math-emu/ieee754sp.c
@@ -40,7 +40,7 @@
 	return ieee754sp_class(x) >= IEEE754_CLASS_SNAN;
 }
 
-int ieee754sp_issnan(union ieee754sp x)
+static inline int ieee754sp_issnan(union ieee754sp x)
 {
 	assert(ieee754sp_isnan(x));
 	return (SPMANT(x) & SP_MBIT(SP_FBITS-1));