[openwrt/openwrt] uboot-fritz4040: Fix build with HOSTCFLAGS

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch master:
https://git.lede-project.org/13e8d5491773cf33723e5a1aae923c1fc13ed295

commit 13e8d5491773cf33723e5a1aae923c1fc13ed295
Author: Hauke Mehrtens <hauke at hauke-m.de>
AuthorDate: Sun Feb 11 00:52:08 2018 +0100

    uboot-fritz4040: Fix build with HOSTCFLAGS
    
    When we provide the HOSTCFLAGS to the U-Boot build it will fail because
    it can not find the u-boot provided header files any more.
    Just overwrite and not append the package specific configuration on top
    of the configuration provided by u-boot.mk.
    uboot-fritz4040 is based on U-Boot 2012.07 and this problem is probably
    similar to the problem seen with the lantiq and ar71xx u-boot build.
    
    Fixes: df9781a4205 ("u-boot,at91bootstrap: fix incorrect HOSTCPPFLAGS variable")
    Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
---
 package/boot/uboot-fritz4040/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package/boot/uboot-fritz4040/Makefile b/package/boot/uboot-fritz4040/Makefile
index 9f9b4e0..4a36c55 100644
--- a/package/boot/uboot-fritz4040/Makefile
+++ b/package/boot/uboot-fritz4040/Makefile
@@ -29,7 +29,7 @@ define U-Boot/fritz4040
 endef
 
 UBOOT_CONFIGURE_VARS += USE_PRIVATE_LIBGCC=yes
-UBOOT_MAKE_FLAGS += USE_PRIVATE_LIBGCC=yes
+UBOOT_MAKE_FLAGS = USE_PRIVATE_LIBGCC=yes
 export DTC
 
 define Build/Configure