[PATCH] powerpc/pkeys: Fix build error with PPC_MEM_KEYS disabled

[Michael Ellerman]

On Mon, 17 Aug 2020 16:03:01 +0530, Aneesh Kumar K.V wrote:
> IS_ENABLED() instead of #ifdef still requires variable declaration.
> In this specific case, default_uamor is declared in asm/pkeys.h which
> is only included if PPC_MEM_KEYS is enabled.
> 
> arch/powerpc/mm/book3s64/hash_utils.c: In function ‘hash__early_init_mmu_secondary’:
> arch/powerpc/mm/book3s64/hash_utils.c:1119:21: error: ‘default_uamor’ undeclared (first use in this function)
>  1119 |   mtspr(SPRN_UAMOR, default_uamor);
>       |                     ^~~~~~~~~~~~~

Applied to powerpc/fixes.

[1/1] powerpc/pkeys: Fix build error with PPC_MEM_KEYS disabled
      https://git.kernel.org/powerpc/c/1e4e4bcaf70ec89f8b499c93a83d078c1e5c0ea6

cheers