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>

arch/mips/math-emu/ieee754dp.h

@@ -81,7 +81,6 @@ static inline union ieee754dp builddp(int s, int bx, u64 m)
 }
 
 extern int ieee754dp_isnan(union ieee754dp);
-extern int ieee754dp_issnan(union ieee754dp);
 extern int __cold ieee754si_xcpt(int, const char *, ...);
 extern s64 __cold ieee754di_xcpt(s64, const char *, ...);
 extern union ieee754dp __cold ieee754dp_xcpt(union ieee754dp, const char *, ...);