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/traps_64.c b/arch/sparc/kernel/traps_64.c
index bca3b4e..c2d153d 100644
--- a/arch/sparc/kernel/traps_64.c
+++ b/arch/sparc/kernel/traps_64.c
@@ -128,6 +128,7 @@
 	bust_spinlocks(1);
 	printk("kernel BUG at %s:%d!\n", file, line);
 }
+EXPORT_SYMBOL(do_BUG);
 #endif
 
 static DEFINE_SPINLOCK(dimm_handler_lock);
@@ -2261,6 +2262,7 @@
 		do_exit(SIGKILL);
 	do_exit(SIGSEGV);
 }
+EXPORT_SYMBOL(die_if_kernel);
 
 #define VIS_OPCODE_MASK	((0x3 << 30) | (0x3f << 19))
 #define VIS_OPCODE_VAL	((0x2 << 30) | (0x36 << 19))