Xen LLC coloring feature can be used only on the MMU subsystem,
move the code that selects it from ARM_64 to MMU and add the
ARM_64 dependency.

Signed-off-by: Luca Fancellu <luca.fancellu@arm.com>
Reviewed-by: Michal Orzel <michal.orzel@amd.com>
---
v4 changes:
 - clarified that it's the Xen feature LLC coloring that is not
   applicable to the MPU subsystem, not the generic cache coloring
   method.
 - Add R-by Michal

v3 changes:
 - Dropped comment on top of boot_fdt_info()

v2 changes:
 - dropped part of the v1 code, now this one is simpler, I will
   discuss better how to design a common boot flow for MPU and
   implement on another patch.

---
---
 xen/arch/arm/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig
index a26d3e11827c..ffdff1f0a36c 100644
--- a/xen/arch/arm/Kconfig
+++ b/xen/arch/arm/Kconfig
@@ -8,7 +8,6 @@ config ARM_64
 	depends on !ARM_32
 	select 64BIT
 	select HAS_FAST_MULTIPLY
-	select HAS_LLC_COLORING if !NUMA
 
 config ARM
 	def_bool y
@@ -76,6 +75,7 @@ choice
 
 config MMU
 	bool "MMU"
+	select HAS_LLC_COLORING if !NUMA && ARM_64
 	select HAS_PMAP
 	select HAS_VMAP
 	select HAS_PASSTHROUGH
-- 
2.34.1