m68k/sun3/: possible cleanups

This patch contains the following possible cleanups:
- make the following needlessly global code static:
  - config.c: sun3_bootmem_alloc()
  - config.c: sun3_sched_init()
  - dvma.c: dvma_page()
  - idprom.c: struct Sun_Machines[]
  - mmu_emu.c: struct ctx_alloc[]
  - sun3dvma.c: iommu_use[]
  - sun3ints.c: led_pattern[]
- remove the unused sbus.c

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/asm-m68k/dvma.h

@@ -63,8 +63,6 @@ static inline int dvma_map_cpu(unsigned long kaddr, unsigned long vaddr,
 	return 0;
 }
 
-extern unsigned long dvma_page(unsigned long kaddr, unsigned long vaddr);
-
 #else /* Sun3x */
 
 /* sun3x dvma page support */

include/asm-m68k/machines.h

@@ -21,8 +21,6 @@ struct Sun_Machine_Models {
 //#define NUM_SUN_MACHINES   23
 #define NUM_SUN_MACHINES  8
 
-extern struct Sun_Machine_Models Sun_Machines[NUM_SUN_MACHINES];
-
 /* The machine type in the idprom area looks like this:
  *
  * ---------------

include/asm-m68k/sbus.h

@@ -12,9 +12,6 @@ struct sbus_dev {
 	} reg_addrs[1];
 };
 
-extern void *sparc_alloc_io (u32, void *, int, char *, u32, int);
-#define sparc_alloc_io(a,b,c,d,e,f)	(a)
-
 #define ARCH_SUN4  0
 
 /* sbus IO functions stolen from include/asm-sparc/io.h for the serial driver */