m68k: add TASK definitions for ColdFires running with MMU

Add appropriate TASK_SIZE and TASK_UNMAPPED_BASE definitions for running
on ColdFire V4e cores with MMU enabled.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>

arch/m68k/include/asm/processor.h

@@ -48,10 +48,12 @@ static inline void wrusp(unsigned long usp)
  * so don't change it unless you know what you are doing.
  */
 #ifdef CONFIG_MMU
-#ifndef CONFIG_SUN3
-#define TASK_SIZE	(0xF0000000UL)
-#else
+#if defined(CONFIG_COLDFIRE)
+#define TASK_SIZE	(0xC0000000UL)
+#elif defined(CONFIG_SUN3)
 #define TASK_SIZE	(0x0E000000UL)
+#else
+#define TASK_SIZE	(0xF0000000UL)
 #endif
 #else
 #define TASK_SIZE	(0xFFFFFFFFUL)
@@ -66,10 +68,12 @@ static inline void wrusp(unsigned long usp)
  * space during mmap's.
  */
 #ifdef CONFIG_MMU
-#ifndef CONFIG_SUN3
-#define TASK_UNMAPPED_BASE	0xC0000000UL
-#else
+#if defined(CONFIG_COLDFIRE)
+#define TASK_UNMAPPED_BASE	0x60000000UL
+#elif defined(CONFIG_SUN3)
 #define TASK_UNMAPPED_BASE	0x0A000000UL
+#else
+#define TASK_UNMAPPED_BASE	0xC0000000UL
 #endif
 #define TASK_UNMAPPED_ALIGN(addr, off)	PAGE_ALIGN(addr)
 #else