post-build: show each script filename before execution

This also simplifies code by removing the ifneq/endif clauses.

[Peter: drop extra space]
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Tested-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

Makefile

@@ -509,11 +509,9 @@ endif
 			$${dir}/ $(TARGET_DIR); \
 	done
 
-ifneq ($(BR2_ROOTFS_POST_BUILD_SCRIPT),"")
-	@$(call MESSAGE,"Executing post-build script\(s\)")
 	@$(foreach s, $(call qstrip,$(BR2_ROOTFS_POST_BUILD_SCRIPT)), \
+		$(call MESSAGE,"Executing post-build script $(s)"); \
 		$(s) $(TARGET_DIR)$(sep))
-endif
 
 ifeq ($(BR2_ENABLE_LOCALE_PURGE),y)
 LOCALE_WHITELIST=$(BUILD_DIR)/locales.nopurge