[openwrt/openwrt] tools/mpc: use STAGING_DIR_HOST instead of hardcoding default

[LEDE Commits]

ansuel pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/e854dcaef37cdb59109448889e9da9358591748a

commit e854dcaef37cdb59109448889e9da9358591748a
Author: Christian Marangi <ansuelsmth at gmail.com>
AuthorDate: Fri Dec 2 20:13:06 2022 +0100

    tools/mpc: use STAGING_DIR_HOST instead of hardcoding default
    
    Use STAGING_DIR_HOST to reference the staging dir for host tools instead
    of hardcoding it to the default location.
    
    Signed-off-by: Christian Marangi <ansuelsmth at gmail.com>
---
 tools/mpc/Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/mpc/Makefile b/tools/mpc/Makefile
index 5c196a27ef..97e94291cb 100644
--- a/tools/mpc/Makefile
+++ b/tools/mpc/Makefile
@@ -22,8 +22,8 @@ unexport CFLAGS
 HOST_CONFIGURE_ARGS += \
 	--enable-static \
 	--disable-shared \
-	--with-mpfr=$(TOPDIR)/staging_dir/host \
-	--with-gmp=$(TOPDIR)/staging_dir/host
+	--with-mpfr=$(STAGING_DIR_HOST) \
+	--with-gmp=$(STAGING_DIR_HOST)
 
 define Host/Uninstall
 	-$(call Host/Compile/Default,uninstall)