powerpc/sparse: Constify the address pointer in __get_user_nocheck()
In __get_user_nocheck, we create an intermediate pointer for the user address we're about to fetch. We currently don't tag this pointer as const. Make it const, as we are simply dereferencing it, and it's scope is limited to the __get_user_nocheck macro. Signed-off-by: NDaniel Axtens <dja@axtens.net> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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