bump ath9k package version number, too

SVN-Revision: 11903

package/ath9k/Makefile

@@ -8,7 +8,7 @@ include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/kernel.mk
 
 PKG_NAME:=ath9k
-PKG_VERSION:=20080720
+PKG_VERSION:=20080722
 PKG_RELEASE:=1
 
 include $(INCLUDE_DIR)/package.mk