[PATCH] kconfig: make sym_change_count static, let it be altered by 2 functions only

Those two functions are
	void sym_set_change_count(int count)
and
	void sym_add_change_count(int count)

All write accesses to sym_change_count are replaced by calls to above
functions.

Variable and changer-functions are moved to confdata.c.  IMO thats ok, as
sym_change_count is an attribute of the .config's change state.

Signed-off-by: Karsten Wiese <fzu@wemgehoertderstaat.de>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c
index ee225ce..8f06c47 100644
--- a/scripts/kconfig/symbol.c
+++ b/scripts/kconfig/symbol.c
@@ -30,7 +30,6 @@
 	.flags = SYMBOL_VALID,
 };
 
-int sym_change_count;
 struct symbol *sym_defconfig_list;
 struct symbol *modules_sym;
 tristate modules_val;
@@ -379,7 +378,7 @@
 
 	for_all_symbols(i, sym)
 		sym->flags &= ~SYMBOL_VALID;
-	sym_change_count++;
+	sym_add_change_count(1);
 	if (modules_sym)
 		sym_calc_value(modules_sym);
 }