[openwrt/openwrt] uboot-at91: fix build after fpu activation

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch master:
https://git.lede-project.org/c5292989edf9d7deb124b157600e34ffd57282cd

commit c5292989edf9d7deb124b157600e34ffd57282cd
Author: Sandeep Sheriker Mallikarjun <sandeepsheriker.mallikarjun at microchip.com>
AuthorDate: Thu Jan 4 12:43:23 2018 -0700

    uboot-at91: fix build after fpu activation
    
    neon and VFPv4 support is added to this target and uboot-at91 build
    fails due to TARGET_CFLAGS -mfloat-abi set to hard. as a fix, setting
    uboot-at91 CFLAGS -mfloat-abi=soft.
    
    Fixes: 01cc6bd495f ("at91: sama5: activate fpu")
    Signed-off-by: Sandeep Sheriker Mallikarjun <sandeepsheriker.mallikarjun at microchip.com>
---
 package/boot/uboot-at91/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package/boot/uboot-at91/Makefile b/package/boot/uboot-at91/Makefile
index 7c420f1..268b254 100644
--- a/package/boot/uboot-at91/Makefile
+++ b/package/boot/uboot-at91/Makefile
@@ -88,7 +88,7 @@ UBOOT_TARGETS := \
 define Build/Compile
 	+$(MAKE) $(PKG_JOBS) -C $(PKG_BUILD_DIR) \
 		CROSS_COMPILE=$(TARGET_CROSS) \
-		KCFLAGS="$(filter-out -fstack-protector, $(TARGET_CFLAGS))"
+		KCFLAGS="$(filter-out -fstack-protector -mfloat-abi=hard, $(TARGET_CFLAGS)) -mfloat-abi=soft" 
 endef
 
 $(eval $(call BuildPackage/U-Boot))