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/um/kernel/dyn.lds.S b/arch/um/kernel/dyn.lds.S
index ec8477d..2454774 100644
--- a/arch/um/kernel/dyn.lds.S
+++ b/arch/um/kernel/dyn.lds.S
@@ -99,7 +99,8 @@
     *(.data.init_task)
     . = ALIGN(KERNEL_STACK_SIZE);
     *(.data.init_irqstack)
-    *(.data .data.* .gnu.linkonce.d.*)
+    DATA_DATA
+    *(.data.* .gnu.linkonce.d.*)
     SORT(CONSTRUCTORS)
   }
   .data1          : { *(.data1) }