all-archs: consolidate .data section definition in asm-generic

With this consolidation we can now modify the .data
section definition in one spot for all archs.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
diff --git a/arch/sparc/kernel/vmlinux.lds.S b/arch/sparc/kernel/vmlinux.lds.S
index 5cb600e..f75a1b8 100644
--- a/arch/sparc/kernel/vmlinux.lds.S
+++ b/arch/sparc/kernel/vmlinux.lds.S
@@ -22,7 +22,7 @@
   RODATA
   .data    :
   {
-    *(.data)
+    DATA_DATA
     CONSTRUCTORS
   }
   .data1   : { *(.data1) }