kconfig: add DEFCONFIG_PATH support

Allow the defconfig path to be specified using the DEFCONFIG_PATH
environment variable.

Bug 1509349

Change-Id: I8addf42df845b4adada21919a7db129901623eb9
Signed-off-by: Adeel Raza <araza@nvidia.com>
Reviewed-on: http://git-master/r/424487
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Alexander Van Brunt <avanbrunt@nvidia.com>
Tested-by: Alexander Van Brunt <avanbrunt@nvidia.com>
# Conflicts:
#	scripts/kconfig/Makefile

diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index d79cba4ce3ebfb24a660da011076deb81a6ff4ad..0265f6a565431602edeac435e9fcae2edeecc334 100644 (file)
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -106,6 +106,11 @@ endif
 
 %_defconfig: $(obj)/conf
        $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig)
+ifeq ($(DEFCONFIG_PATH),)
+       $(Q)$< --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig)
+else
+       $(Q)$< --defconfig=$(DEFCONFIG_PATH)/$@ $(Kconfig)
+endif
 
 configfiles=$(wildcard $(srctree)/kernel/configs/$@ $(srctree)/arch/$(SRCARCH)/configs/$@)