powerpc: Cleanup Kconfig selection of hugetlbfs support

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 10a0a54..2ba14e7 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -414,6 +414,10 @@
 config ARCH_POPULATES_NODE_MAP
 	def_bool y
 
+config SYS_SUPPORTS_HUGETLBFS
+       def_bool y
+       depends on PPC_BOOK3S_64
+
 source "mm/Kconfig"
 
 config ARCH_MEMORY_PROBE