[source] rules.mk: export STAGING_DIR_HOSTPKG

[LEDE Commits]

neoraider pushed a commit to source.git, branch master:
https://git.lede-project.org/40d3401f3b4dcd117b3bc3bd2f0b9b8e9d5f03b2

commit 40d3401f3b4dcd117b3bc3bd2f0b9b8e9d5f03b2
Author: Matthias Schiffer <mschiffer at universe-factory.net>
AuthorDate: Thu Jan 19 00:03:32 2017 +0100

    rules.mk: export STAGING_DIR_HOSTPKG
    
    Signed-off-by: Matthias Schiffer <mschiffer at universe-factory.net>
---
 rules.mk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rules.mk b/rules.mk
index b42e19e..2586df3 100644
--- a/rules.mk
+++ b/rules.mk
@@ -233,7 +233,7 @@ else
 endif
 
 export PATH:=$(TARGET_PATH)
-export STAGING_DIR STAGING_DIR_HOST
+export STAGING_DIR STAGING_DIR_HOST STAGING_DIR_HOSTPKG
 export SH_FUNC:=. $(INCLUDE_DIR)/shell.sh;
 
 PKG_CONFIG:=$(STAGING_DIR_HOST)/bin/pkg-config