ppc64: use e2a.c from powerpc/lib

since it is identical to e2a.c from ppc64/lib

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile
index 1f1f01b..8715389 100644
--- a/arch/powerpc/lib/Makefile
+++ b/arch/powerpc/lib/Makefile
@@ -7,10 +7,10 @@
 obj-$(CONFIG_PPC32)	+= div64.o copy_32.o checksum_32.o
 obj-$(CONFIG_PPC64)	+= copypage_64.o copyuser_64.o memcpy_64.o \
 			   usercopy_64.o sstep.o mem_64.o
-obj-$(CONFIG_PPC_ISERIES) += e2a.o
 ifeq ($(CONFIG_PPC64),y)
 obj-$(CONFIG_SMP)	+= locks.o
 endif
 endif
 
 obj-$(CONFIG_PPC64)	+= checksum_64.o
+obj-$(CONFIG_PPC_ISERIES) += e2a.o