powerpc/oprofile: Don't build server oprofile drivers on 64-bit BookE

They will fail to build due to the lack of mtmsrd, and wouldn't
be useful anyways

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/oprofile/Makefile b/arch/powerpc/oprofile/Makefile
index 73e1c2c..e219ca4 100644
--- a/arch/powerpc/oprofile/Makefile
+++ b/arch/powerpc/oprofile/Makefile
@@ -16,6 +16,6 @@
 oprofile-$(CONFIG_OPROFILE_CELL) += op_model_cell.o \
 		cell/spu_profiler.o cell/vma_map.o \
 		cell/spu_task_sync.o
-oprofile-$(CONFIG_PPC64) += op_model_rs64.o op_model_power4.o op_model_pa6t.o
+oprofile-$(CONFIG_PPC_BOOK3S_64) += op_model_rs64.o op_model_power4.o op_model_pa6t.o
 oprofile-$(CONFIG_FSL_EMB_PERFMON) += op_model_fsl_emb.o
 oprofile-$(CONFIG_6xx) += op_model_7450.o