powerpc/math-emu: Fix efp dependence

There is no dependece between efp and math-emu.  But when disable math-emu
the efp code cannot be built.

Signed-off-by: Liu Yu <yu.liu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/powerpc/math-emu/Makefile b/arch/powerpc/math-emu/Makefile
index f9e506a..0c16ab9 100644
--- a/arch/powerpc/math-emu/Makefile
+++ b/arch/powerpc/math-emu/Makefile
@@ -1,6 +1,4 @@
 
-obj-y				:= math.o fmr.o lfd.o stfd.o
-
 obj-$(CONFIG_MATH_EMULATION)	+= fabs.o fadd.o fadds.o fcmpo.o fcmpu.o \
 					fctiw.o fctiwz.o fdiv.o fdivs.o \
 					fmadd.o fmadds.o fmsub.o fmsubs.o \
@@ -9,7 +7,8 @@
 					fres.o frsp.o frsqrte.o fsel.o lfs.o \
 					fsqrt.o	fsqrts.o fsub.o fsubs.o \
 					mcrfs.o mffs.o mtfsb0.o mtfsb1.o \
-					mtfsf.o mtfsfi.o stfiwx.o stfs.o
+					mtfsf.o mtfsfi.o stfiwx.o stfs.o \
+					math.o fmr.o lfd.o stfd.o
 
 obj-$(CONFIG_SPE)		+= math_efp.o