sh: math-emu support

This implements initial math-emu support, aimed primarily at SH-3.

Signed-off-by: Takashi YOSHII <takasi-y@ops.dti.ne.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/math-emu/Makefile b/arch/sh/math-emu/Makefile
new file mode 100644
index 0000000..638b342
--- /dev/null
+++ b/arch/sh/math-emu/Makefile
@@ -0,0 +1 @@
+obj-y	:= math.o