sparc/mm/: possible cleanups

This patch contains the following possible cleanups:
- make the following needlessly global code static:
  - fault.c: force_user_fault()
  - init.c: calc_max_low_pfn()
  - init.c: pgt_cache_water[]
  - init.c: map_high_region()
  - srmmu.c: hwbug_bitmask
  - srmmu.c: srmmu_swapper_pg_dir
  - srmmu.c: srmmu_context_table
  - srmmu.c: is_hypersparc
  - srmmu.c: srmmu_cache_pagetables
  - srmmu.c: srmmu_nocache_size
  - srmmu.c: srmmu_nocache_end
  - srmmu.c: srmmu_get_nocache()
  - srmmu.c: srmmu_free_nocache()
  - srmmu.c: srmmu_early_allocate_ptable_skeleton()
  - srmmu.c: srmmu_nocache_calcsize()
  - srmmu.c: srmmu_nocache_init()
  - srmmu.c: srmmu_alloc_thread_info()
  - srmmu.c: early_pgtable_allocfail()
  - srmmu.c: srmmu_early_allocate_ptable_skeleton()
  - srmmu.c: srmmu_allocate_ptable_skeleton()
  - srmmu.c: srmmu_inherit_prom_mappings()
  - sunami.S: tsunami_copy_1page
- remove the following unused code:
  - init.c: struct sparc_aliases

Signed-off-by: Adrian Bunk <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

include/asm-sparc/mbus.h

@@ -43,8 +43,6 @@ extern unsigned int viking_rev, swift_rev, cypress_rev;
 #define HWBUG_SUPERSCALAR_BAD        0x00000080
 #define HWBUG_PACINIT_BITROT         0x00000100
 
-extern unsigned int hwbug_bitmask;
-
 /* First the module type values. To find out which you have, just load
  * the mmu control register from ASI_M_MMUREG alternate address space and
  * shift the value right 28 bits.

include/asm-sparc/page.h

@@ -58,8 +58,6 @@ struct cache_palias {
 	int context;
 };
 
-extern struct cache_palias *sparc_aliases;
-
 /* passing structs on the Sparc slow us down tremendously... */
 
 /* #define STRICT_MM_TYPECHECKS */