Fix typo in mkconfig script (used == instead of =)

Patch by Murray Jensen, 18 Jul 2005

CHANGELOG

@@ -2,6 +2,9 @@
 Changes for U-Boot 1.1.3:
 ======================================================================
 
+* Fix typo in mkconfig script (used == instead of =)
+  Patch by Murray Jensen, 18 Jul 2005
+
 * Cleanup build problems on 64 bit build hosts
 
 * Update MAINTAINERS file

mkconfig

@@ -32,7 +32,7 @@ rm -f asm
 ln -s asm-$2 asm
 rm -f asm-$2/arch
 
-if [ -z "$6" -o "$6" == "NULL" ] ; then
+if [ -z "$6" -o "$6" = "NULL" ] ; then
 	ln -s arch-$3 asm-$2/arch
 else
 	ln -s arch-$6 asm-$2/arch