We want PPC_DENORMALISATION enabled when POWERNV is enabled,
so update the Kconfig.

Signed-off-by: Anton Blanchard <[email protected]>
---

Index: b/arch/powerpc/Kconfig
===================================================================
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -566,7 +566,7 @@ config SCHED_SMT
 config PPC_DENORMALISATION
        bool "PowerPC denormalisation exception handling"
        depends on PPC_BOOK3S_64
-       default "n"
+       default "y" if PPC_POWERNV
        ---help---
          Add support for handling denormalisation of single precision
          values.  Useful for bare metal only.  If unsure say Y here.
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