ARM: v6k: select generic atomic64 code according to V6 variants
If CONFIG_CPU_V6 is enabled, avoid using the double-word exclusive instructions in the kernel's atomic implementations as these are not supported. Fall back to the generic spinlock code instead. Acked-by: NTony Lindgren <tony@atomide.com> Acked-by: NWill Deacon <will.deacon@arm.com> Tested-by: NSourav Poddar <sourav.poddar@ti.com> Tested-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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