powerpc/mm: Remove PPC_MM_SLICES #ifdef for book3s64

Book3s64 always have PPC_MM_SLICES enabled. So remove the unncessary #ifdef
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/include/asm/book3s/64/mmu.h

@@ -138,7 +138,6 @@ typedef struct {
 	/* NPU NMMU context */
 	struct npu_context *npu_context;
 
-#ifdef CONFIG_PPC_MM_SLICES
 	 /* SLB page size encodings*/
 	unsigned char low_slices_psize[BITS_PER_LONG / BITS_PER_BYTE];
 	unsigned char high_slices_psize[SLICE_ARRAY_SIZE];
@@ -151,9 +150,6 @@ typedef struct {
 	struct slice_mask mask_16m;
 	struct slice_mask mask_16g;
 # endif
-#else
-	u16 sllp;		/* SLB page size encoding */
-#endif
 	unsigned long vdso_base;
 #ifdef CONFIG_PPC_SUBPAGE_PROT
 	struct subpage_prot_table spt;

arch/powerpc/include/asm/book3s/64/slice.h

@@ -2,8 +2,6 @@
 #ifndef _ASM_POWERPC_BOOK3S_64_SLICE_H
 #define _ASM_POWERPC_BOOK3S_64_SLICE_H
 
-#ifdef CONFIG_PPC_MM_SLICES
-
 #define SLICE_LOW_SHIFT		28
 #define SLICE_LOW_TOP		(0x100000000ul)
 #define SLICE_NUM_LOW		(SLICE_LOW_TOP >> SLICE_LOW_SHIFT)
@@ -13,15 +11,4 @@
 #define SLICE_NUM_HIGH		(H_PGTABLE_RANGE >> SLICE_HIGH_SHIFT)
 #define GET_HIGH_SLICE_INDEX(addr)	((addr) >> SLICE_HIGH_SHIFT)
 
-#else /* CONFIG_PPC_MM_SLICES */
-
-#define get_slice_psize(mm, addr)	((mm)->context.user_psize)
-#define slice_set_user_psize(mm, psize)		\
-do {						\
-	(mm)->context.user_psize = (psize);	\
-	(mm)->context.sllp = SLB_VSID_USER | mmu_psize_defs[(psize)].sllp; \
-} while (0)
-
-#endif /* CONFIG_PPC_MM_SLICES */
-
 #endif /* _ASM_POWERPC_BOOK3S_64_SLICE_H */