MIPS: math-emu: Mark exception handling functions as __cold.

Optimizes the code flow and shaves of half a percent of the math-emu
code size.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --cc arch/mips/math-emu/ieee754.c
Simple merge

diff --cc arch/mips/math-emu/ieee754.h
Simple merge

diff --cc arch/mips/math-emu/ieee754dp.c
Simple merge

diff --cc arch/mips/math-emu/ieee754dp.h
Simple merge

diff --cc arch/mips/math-emu/ieee754sp.c
Simple merge

diff --cc arch/mips/math-emu/ieee754sp.h
Simple merge

diff --cc arch/mips/math-emu/ieee754xcpt.c
Simple merge