m68knommu: use generic section names in setup code

We should be including and using sections.h to get at the extern
definitions of the linker sections in the m68knommu startup code.
Not defining them locally.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>

arch/m68k/kernel/setup_no.c

@@ -36,6 +36,7 @@
 #include <asm/irq.h>
 #include <asm/machdep.h>
 #include <asm/pgtable.h>
+#include <asm/sections.h>
 
 unsigned long memory_start;
 unsigned long memory_end;
@@ -80,7 +81,6 @@ void (*mach_power_off)(void);
 #define	CPU_INSTR_PER_JIFFY	16
 #endif
 
-extern int _stext, _etext, _sdata, _edata, _sbss, _ebss, _end;
 extern int _ramstart, _ramend;
 
 #if defined(CONFIG_UBOOT)