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

Move definition of .text section to asm-generic.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
diff --git a/arch/um/kernel/uml.lds.S b/arch/um/kernel/uml.lds.S
index bc59f97..8435105 100644
--- a/arch/um/kernel/uml.lds.S
+++ b/arch/um/kernel/uml.lds.S
@@ -37,7 +37,7 @@
 
   .text      :
   {
-    *(.text)
+    TEXT_TEXT
     SCHED_TEXT
     LOCK_TEXT
     *(.fixup)