sparc64: move EXPORT_SYMBOL to the symbols definition

Move all applicable EXPORT_SYMBOL()s to the file where the respective
symbol is defined.

Removed all the includes that are no longer needed in sparc_ksyms_64.c

Comment all remaining EXPORT_SYMBOL()s in sparc_ksyms_64.c

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

Additions by Julian Calaby:
* Moved EXPORT_SYMBOL()s for prom functions to their rightful places.
* Made some minor cleanups to the includes and comments of sparc_ksyms_64.c
* Updated and tidied commit message.
* Rebased patch over sparc-2.6.git HEAD.
* Ensured that all modified files have the correct includes.

Signed-off-by: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c
index 555db74..49d061f 100644
--- a/arch/sparc/kernel/setup_64.c
+++ b/arch/sparc/kernel/setup_64.c
@@ -58,6 +58,7 @@
  * operations in asm/ns87303.h
  */
 DEFINE_SPINLOCK(ns87303_lock);
+EXPORT_SYMBOL(ns87303_lock);
 
 struct screen_info screen_info = {
 	0, 0,			/* orig-x, orig-y */
@@ -425,5 +426,7 @@
 
 	prom_cmdline();
 }
+EXPORT_SYMBOL(sun_do_break);
 
 int stop_a_enabled = 1;
+EXPORT_SYMBOL(stop_a_enabled);